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Finding the Fourth Proportional to 80,017.68, 120,041.10 and 27,432.48

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Solution

The fourth proportional to 80,017.68, 120,041.10 and 27,432.48 is: 41,153.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,017.68 : 120,041.10 = 27,432.48 : x
  2. Step 2: Convert to fraction form
    80,017.68/120,041.10 = 27,432.48/x
  3. Step 3: Cross multiply
    80,017.68x = 120,041.10 × 27,432.48
  4. Step 4: Simplify right side
    80,017.68x = 3,293,025,074.93
  5. Step 5: Solve for x
    x = 3,293,025,074.93/80,017.68
  6. Step 6: Final answer
    x = 41,153.72

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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.