Home / 87,872.68-131,829.90-28,708.30

Finding the Fourth Proportional to 87,872.68, 131,829.90 and 28,708.30

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Solution

The fourth proportional to 87,872.68, 131,829.90 and 28,708.30 is: 43,069.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,872.68 : 131,829.90 = 28,708.30 : x
  2. Step 2: Convert to fraction form
    87,872.68/131,829.90 = 28,708.30/x
  3. Step 3: Cross multiply
    87,872.68x = 131,829.90 × 28,708.30
  4. Step 4: Simplify right side
    87,872.68x = 3,784,612,318.17
  5. Step 5: Solve for x
    x = 3,784,612,318.17/87,872.68
  6. Step 6: Final answer
    x = 43,069.27

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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.