72 is what percent of 1900 - 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 1900 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 1900, so we can write it down as 100%=1900.
4. We know, that x% equals 72 of the output value, so we can write it down as x%=72.
5. Now we have two simple equations:
1) 100%=1900
2) x%=72
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%=1900/72
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 72 is what percent of 1900

100%/x%=1900/72
(100/x)*x=(1900/72)*x       - we multiply both sides of the equation by x
100=26.388888888889*x       - we divide both sides of the equation by (26.388888888889) to get x
100/26.388888888889=x
3.7894736842105=x
x=3.7894736842105

now we have:
72 is 3.7894736842105% of 1900