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Finding the Fourth Proportional to 67,378.60, 101,067.90 and 42,446.80

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Solution

The fourth proportional to 67,378.60, 101,067.90 and 42,446.80 is: 63,670.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,378.60 : 101,067.90 = 42,446.80 : x
  2. Step 2: Convert to fraction form
    67,378.60/101,067.90 = 42,446.80/x
  3. Step 3: Cross multiply
    67,378.60x = 101,067.90 × 42,446.80
  4. Step 4: Simplify right side
    67,378.60x = 4,290,008,937.72
  5. Step 5: Solve for x
    x = 4,290,008,937.72/67,378.60
  6. Step 6: Final answer
    x = 63,670.20

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1.5x scale

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.