Home / 87,874.20-131,832.16-28,709.78

Finding the Fourth Proportional to 87,874.20, 131,832.16 and 28,709.78

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Solution

The fourth proportional to 87,874.20, 131,832.16 and 28,709.78 is: 43,071.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,874.20 : 131,832.16 = 28,709.78 : x
  2. Step 2: Convert to fraction form
    87,874.20/131,832.16 = 28,709.78/x
  3. Step 3: Cross multiply
    87,874.20x = 131,832.16 × 28,709.78
  4. Step 4: Simplify right side
    87,874.20x = 3,784,872,310.52
  5. Step 5: Solve for x
    x = 3,784,872,310.52/87,874.20
  6. Step 6: Final answer
    x = 43,071.49

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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.