Finding the Fourth Proportional to 86,569.70, 129,854.55 and 82,487.30
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Solution
The fourth proportional to 86,569.70, 129,854.55 and 82,487.30 is: 123,730.95
Step by Step Solution
- Step 1: Write the proportion equation
86,569.70 : 129,854.55 = 82,487.30 : x - Step 2: Convert to fraction form
86,569.70/129,854.55 = 82,487.30/x - Step 3: Cross multiply
86,569.70x = 129,854.55 × 82,487.30 - Step 4: Simplify right side
86,569.70x = 10,711,351,222.22 - Step 5: Solve for x
x = 10,711,351,222.22/86,569.70 - Step 6: Final answer
x = 123,730.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.