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Finding the Fourth Proportional to 67,378.10, 101,067.15 and 42,446.30

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Solution

The fourth proportional to 67,378.10, 101,067.15 and 42,446.30 is: 63,669.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,378.10 : 101,067.15 = 42,446.30 : x
  2. Step 2: Convert to fraction form
    67,378.10/101,067.15 = 42,446.30/x
  3. Step 3: Cross multiply
    67,378.10x = 101,067.15 × 42,446.30
  4. Step 4: Simplify right side
    67,378.10x = 4,289,926,569.05
  5. Step 5: Solve for x
    x = 4,289,926,569.05/67,378.10
  6. Step 6: Final answer
    x = 63,669.45

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Double scale
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Similar ratio
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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.