Home / 87,821.92-131,717.90-31,650.85

Finding the Fourth Proportional to 87,821.92, 131,717.90 and 31,650.85

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Solution

The fourth proportional to 87,821.92, 131,717.90 and 31,650.85 is: 47,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,821.92 : 131,717.90 = 31,650.85 : x
  2. Step 2: Convert to fraction form
    87,821.92/131,717.90 = 31,650.85/x
  3. Step 3: Cross multiply
    87,821.92x = 131,717.90 × 31,650.85
  4. Step 4: Simplify right side
    87,821.92x = 4,168,983,560.95
  5. Step 5: Solve for x
    x = 4,168,983,560.95/87,821.92
  6. Step 6: Final answer
    x = 47,470.88

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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.