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Finding the Fourth Proportional to 71,337.96, 106,998.84 and 18,751.55

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Solution

The fourth proportional to 71,337.96, 106,998.84 and 18,751.55 is: 28,125.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,337.96 : 106,998.84 = 18,751.55 : x
  2. Step 2: Convert to fraction form
    71,337.96/106,998.84 = 18,751.55/x
  3. Step 3: Cross multiply
    71,337.96x = 106,998.84 × 18,751.55
  4. Step 4: Simplify right side
    71,337.96x = 2,006,393,563.21
  5. Step 5: Solve for x
    x = 2,006,393,563.21/71,337.96
  6. Step 6: Final answer
    x = 28,125.19

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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.