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Finding the Fourth Proportional to 67,540.62, 101,279.10 and 39,468.78

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Solution

The fourth proportional to 67,540.62, 101,279.10 and 39,468.78 is: 59,184.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,540.62 : 101,279.10 = 39,468.78 : x
  2. Step 2: Convert to fraction form
    67,540.62/101,279.10 = 39,468.78/x
  3. Step 3: Cross multiply
    67,540.62x = 101,279.10 × 39,468.78
  4. Step 4: Simplify right side
    67,540.62x = 3,997,362,516.50
  5. Step 5: Solve for x
    x = 3,997,362,516.50/67,540.62
  6. Step 6: Final answer
    x = 59,184.57

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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.