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Finding the Fourth Proportional to 67,488.60, 101,276.10 and 39,408.60

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Solution

The fourth proportional to 67,488.60, 101,276.10 and 39,408.60 is: 59,138.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,488.60 : 101,276.10 = 39,408.60 : x
  2. Step 2: Convert to fraction form
    67,488.60/101,276.10 = 39,408.60/x
  3. Step 3: Cross multiply
    67,488.60x = 101,276.10 × 39,408.60
  4. Step 4: Simplify right side
    67,488.60x = 3,991,149,314.46
  5. Step 5: Solve for x
    x = 3,991,149,314.46/67,488.60
  6. Step 6: Final answer
    x = 59,138.13

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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.