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Finding the Fourth Proportional to 67,404.60, 101,106.90 and 42,472.80

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Solution

The fourth proportional to 67,404.60, 101,106.90 and 42,472.80 is: 63,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,404.60 : 101,106.90 = 42,472.80 : x
  2. Step 2: Convert to fraction form
    67,404.60/101,106.90 = 42,472.80/x
  3. Step 3: Cross multiply
    67,404.60x = 101,106.90 × 42,472.80
  4. Step 4: Simplify right side
    67,404.60x = 4,294,293,142.32
  5. Step 5: Solve for x
    x = 4,294,293,142.32/67,404.60
  6. Step 6: Final answer
    x = 63,709.20

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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.