84.86 is what percent of 390.02 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 390.02 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 390.02, so we can write it down as 100%=390.02.
4. We know, that x% equals 84.86 of the output value, so we can write it down as x%=84.86.
5. Now we have two simple equations:
1) 100%=390.02
2) x%=84.86
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=390.02/84.86
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 84.86 is what percent of 390.02

100%/x%=390.02/84.86
(100/x)*x=(390.02/84.86)*x       - we multiply both sides of the equation by x
100=4.5960405373556*x       - we divide both sides of the equation by (4.5960405373556) to get x
100/4.5960405373556=x
21.757858571355=x
x=21.757858571355

now we have:
84.86 is 21.757858571355% of 390.02