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Finding the Fourth Proportional to 67,377.60, 101,066.40 and 42,445.80

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Solution

The fourth proportional to 67,377.60, 101,066.40 and 42,445.80 is: 63,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,377.60 : 101,066.40 = 42,445.80 : x
  2. Step 2: Convert to fraction form
    67,377.60/101,066.40 = 42,445.80/x
  3. Step 3: Cross multiply
    67,377.60x = 101,066.40 × 42,445.80
  4. Step 4: Simplify right side
    67,377.60x = 4,289,844,201.12
  5. Step 5: Solve for x
    x = 4,289,844,201.12/67,377.60
  6. Step 6: Final answer
    x = 63,668.70

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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.