Finding the Fourth Proportional to 87,424.70, 131,104.92 and 31,249.65
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Solution
The fourth proportional to 87,424.70, 131,104.92 and 31,249.65 is: 46,862.99
Step by Step Solution
- Step 1: Write the proportion equation
87,424.70 : 131,104.92 = 31,249.65 : x - Step 2: Convert to fraction form
87,424.70/131,104.92 = 31,249.65/x - Step 3: Cross multiply
87,424.70x = 131,104.92 × 31,249.65 - Step 4: Simplify right side
87,424.70x = 4,096,982,863.28 - Step 5: Solve for x
x = 4,096,982,863.28/87,424.70 - Step 6: Final answer
x = 46,862.99
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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.