Home / 87,812.29-131,720.60-28,654.21

Finding the Fourth Proportional to 87,812.29, 131,720.60 and 28,654.21

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Solution

The fourth proportional to 87,812.29, 131,720.60 and 28,654.21 is: 42,982.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.29 : 131,720.60 = 28,654.21 : x
  2. Step 2: Convert to fraction form
    87,812.29/131,720.60 = 28,654.21/x
  3. Step 3: Cross multiply
    87,812.29x = 131,720.60 × 28,654.21
  4. Step 4: Simplify right side
    87,812.29x = 3,774,349,733.73
  5. Step 5: Solve for x
    x = 3,774,349,733.73/87,812.29
  6. Step 6: Final answer
    x = 42,982.02

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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.