Home / 87,915.40-131,872.68-31,755.47

Finding the Fourth Proportional to 87,915.40, 131,872.68 and 31,755.47

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Solution

The fourth proportional to 87,915.40, 131,872.68 and 31,755.47 is: 47,633.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.40 : 131,872.68 = 31,755.47 : x
  2. Step 2: Convert to fraction form
    87,915.40/131,872.68 = 31,755.47/x
  3. Step 3: Cross multiply
    87,915.40x = 131,872.68 × 31,755.47
  4. Step 4: Simplify right side
    87,915.40x = 4,187,678,274.20
  5. Step 5: Solve for x
    x = 4,187,678,274.20/87,915.40
  6. Step 6: Final answer
    x = 47,633.05

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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.