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Finding the Fourth Proportional to 87,375.78, 130,851.45 and 49,822.56

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Solution

The fourth proportional to 87,375.78, 130,851.45 and 49,822.56 is: 74,612.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,375.78 : 130,851.45 = 49,822.56 : x
  2. Step 2: Convert to fraction form
    87,375.78/130,851.45 = 49,822.56/x
  3. Step 3: Cross multiply
    87,375.78x = 130,851.45 × 49,822.56
  4. Step 4: Simplify right side
    87,375.78x = 6,519,354,218.71
  5. Step 5: Solve for x
    x = 6,519,354,218.71/87,375.78
  6. Step 6: Final answer
    x = 74,612.83

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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.