Finding the Fourth Proportional to 99,315.12, 137,046.76 and 58,472.80
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Solution
The fourth proportional to 99,315.12, 137,046.76 and 58,472.80 is: 80,687.69
Step by Step Solution
- Step 1: Write the proportion equation
99,315.12 : 137,046.76 = 58,472.80 : x - Step 2: Convert to fraction form
99,315.12/137,046.76 = 58,472.80/x - Step 3: Cross multiply
99,315.12x = 137,046.76 × 58,472.80 - Step 4: Simplify right side
99,315.12x = 8,013,507,788.13 - Step 5: Solve for x
x = 8,013,507,788.13/99,315.12 - Step 6: Final answer
x = 80,687.69
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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.