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Finding the Fourth Proportional to 40,672.20, 60,878.70 and 29,008.20

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Solution

The fourth proportional to 40,672.20, 60,878.70 and 29,008.20 is: 43,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,672.20 : 60,878.70 = 29,008.20 : x
  2. Step 2: Convert to fraction form
    40,672.20/60,878.70 = 29,008.20/x
  3. Step 3: Cross multiply
    40,672.20x = 60,878.70 × 29,008.20
  4. Step 4: Simplify right side
    40,672.20x = 1,765,981,505.34
  5. Step 5: Solve for x
    x = 1,765,981,505.34/40,672.20
  6. Step 6: Final answer
    x = 43,419.87

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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.