Finding the Fourth Proportional to 87,715.08, 121,039.50 and 49,472.52
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Solution
The fourth proportional to 87,715.08, 121,039.50 and 49,472.52 is: 68,267.95
Step by Step Solution
- Step 1: Write the proportion equation
87,715.08 : 121,039.50 = 49,472.52 : x - Step 2: Convert to fraction form
87,715.08/121,039.50 = 49,472.52/x - Step 3: Cross multiply
87,715.08x = 121,039.50 × 49,472.52 - Step 4: Simplify right side
87,715.08x = 5,988,129,084.54 - Step 5: Solve for x
x = 5,988,129,084.54/87,715.08 - Step 6: Final answer
x = 68,267.95
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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.