Home / 87,627.12-131,428.36-28,463.60

Finding the Fourth Proportional to 87,627.12, 131,428.36 and 28,463.60

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Solution

The fourth proportional to 87,627.12, 131,428.36 and 28,463.60 is: 42,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,627.12 : 131,428.36 = 28,463.60 : x
  2. Step 2: Convert to fraction form
    87,627.12/131,428.36 = 28,463.60/x
  3. Step 3: Cross multiply
    87,627.12x = 131,428.36 × 28,463.60
  4. Step 4: Simplify right side
    87,627.12x = 3,740,924,267.70
  5. Step 5: Solve for x
    x = 3,740,924,267.70/87,627.12
  6. Step 6: Final answer
    x = 42,691.40

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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.