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Finding the Fourth Proportional to 71,611.32, 107,419.68 and 27,229.80

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Solution

The fourth proportional to 71,611.32, 107,419.68 and 27,229.80 is: 40,845.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,611.32 : 107,419.68 = 27,229.80 : x
  2. Step 2: Convert to fraction form
    71,611.32/107,419.68 = 27,229.80/x
  3. Step 3: Cross multiply
    71,611.32x = 107,419.68 × 27,229.80
  4. Step 4: Simplify right side
    71,611.32x = 2,925,016,402.46
  5. Step 5: Solve for x
    x = 2,925,016,402.46/71,611.32
  6. Step 6: Final answer
    x = 40,845.73

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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.