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Finding the Fourth Proportional to 74,304.20, 102,539.79 and 42,473.79

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Solution

The fourth proportional to 74,304.20, 102,539.79 and 42,473.79 is: 58,613.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,304.20 : 102,539.79 = 42,473.79 : x
  2. Step 2: Convert to fraction form
    74,304.20/102,539.79 = 42,473.79/x
  3. Step 3: Cross multiply
    74,304.20x = 102,539.79 × 42,473.79
  4. Step 4: Simplify right side
    74,304.20x = 4,355,253,507.10
  5. Step 5: Solve for x
    x = 4,355,253,507.10/74,304.20
  6. Step 6: Final answer
    x = 58,613.83

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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.