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Finding the Fourth Proportional to 99,882.17, 137,837.86 and 54,560.78

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Solution

The fourth proportional to 99,882.17, 137,837.86 and 54,560.78 is: 75,294.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,882.17 : 137,837.86 = 54,560.78 : x
  2. Step 2: Convert to fraction form
    99,882.17/137,837.86 = 54,560.78/x
  3. Step 3: Cross multiply
    99,882.17x = 137,837.86 × 54,560.78
  4. Step 4: Simplify right side
    99,882.17x = 7,520,540,465.94
  5. Step 5: Solve for x
    x = 7,520,540,465.94/99,882.17
  6. Step 6: Final answer
    x = 75,294.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.