72.12 is what percent of 555 - 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 555 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 555, so we can write it down as 100%=555.
4. We know, that x% equals 72.12 of the output value, so we can write it down as x%=72.12.
5. Now we have two simple equations:
1) 100%=555
2) x%=72.12
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%=555/72.12
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 72.12 is what percent of 555

100%/x%=555/72.12
(100/x)*x=(555/72.12)*x       - we multiply both sides of the equation by x
100=7.69550748752*x       - we divide both sides of the equation by (7.69550748752) to get x
100/7.69550748752=x
12.9945945946=x
x=12.9945945946

now we have:
72.12 is 12.9945945946% of 555