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Finding the Fourth Proportional to 71,455.68, 107,194.46 and 18,869.27

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Solution

The fourth proportional to 71,455.68, 107,194.46 and 18,869.27 is: 28,306.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,455.68 : 107,194.46 = 18,869.27 : x
  2. Step 2: Convert to fraction form
    71,455.68/107,194.46 = 18,869.27/x
  3. Step 3: Cross multiply
    71,455.68x = 107,194.46 × 18,869.27
  4. Step 4: Simplify right side
    71,455.68x = 2,022,680,577.93
  5. Step 5: Solve for x
    x = 2,022,680,577.93/71,455.68
  6. Step 6: Final answer
    x = 28,306.79

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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.