64.13 is what percent of 77 - 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 77 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 77, so we can write it down as 100%=77.
4. We know, that x% equals 64.13 of the output value, so we can write it down as x%=64.13.
5. Now we have two simple equations:
1) 100%=77
2) x%=64.13
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%=77/64.13
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 64.13 is what percent of 77

100%/x%=77/64.13
(100/x)*x=(77/64.13)*x       - we multiply both sides of the equation by x
100=1.2006861063465*x       - we divide both sides of the equation by (1.2006861063465) to get x
100/1.2006861063465=x
83.285714285714=x
x=83.285714285714

now we have:
64.13 is 83.285714285714% of 77