Finding the Fourth Proportional to 91,731.24, 126,535.44 and 57,685.80
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Solution
The fourth proportional to 91,731.24, 126,535.44 and 57,685.80 is: 79,572.65
Step by Step Solution
- Step 1: Write the proportion equation
91,731.24 : 126,535.44 = 57,685.80 : x - Step 2: Convert to fraction form
91,731.24/126,535.44 = 57,685.80/x - Step 3: Cross multiply
91,731.24x = 126,535.44 × 57,685.80 - Step 4: Simplify right side
91,731.24x = 7,299,298,084.75 - Step 5: Solve for x
x = 7,299,298,084.75/91,731.24 - Step 6: Final answer
x = 79,572.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.