Finding the Fourth Proportional to 81,124.44, 121,691.52 and 39,013.08
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Solution
The fourth proportional to 81,124.44, 121,691.52 and 39,013.08 is: 58,521.96
Step by Step Solution
- Step 1: Write the proportion equation
81,124.44 : 121,691.52 = 39,013.08 : x - Step 2: Convert to fraction form
81,124.44/121,691.52 = 39,013.08/x - Step 3: Cross multiply
81,124.44x = 121,691.52 × 39,013.08 - Step 4: Simplify right side
81,124.44x = 4,747,561,005.08 - Step 5: Solve for x
x = 4,747,561,005.08/81,124.44 - Step 6: Final answer
x = 58,521.96
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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.