31.87 is what percent of 50.4 - 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 50.4 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 50.4, so we can write it down as 100%=50.4.
4. We know, that x% equals 31.87 of the output value, so we can write it down as x%=31.87.
5. Now we have two simple equations:
1) 100%=50.4
2) x%=31.87
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%=50.4/31.87
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 31.87 is what percent of 50.4

100%/x%=50.4/31.87
(100/x)*x=(50.4/31.87)*x       - we multiply both sides of the equation by x
100=1.5814245371823*x       - we divide both sides of the equation by (1.5814245371823) to get x
100/1.5814245371823=x
63.234126984127=x
x=63.234126984127

now we have:
31.87 is 63.234126984127% of 50.4