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Finding the Fourth Proportional to 99,372.52, 137,132.90 and 54,049.53

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Solution

The fourth proportional to 99,372.52, 137,132.90 and 54,049.53 is: 74,587.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,372.52 : 137,132.90 = 54,049.53 : x
  2. Step 2: Convert to fraction form
    99,372.52/137,132.90 = 54,049.53/x
  3. Step 3: Cross multiply
    99,372.52x = 137,132.90 × 54,049.53
  4. Step 4: Simplify right side
    99,372.52x = 7,411,968,467.85
  5. Step 5: Solve for x
    x = 7,411,968,467.85/99,372.52
  6. Step 6: Final answer
    x = 74,587.71

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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.