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Finding the Fourth Proportional to 80,006.87, 120,009.87 and 32,621.78

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Solution

The fourth proportional to 80,006.87, 120,009.87 and 32,621.78 is: 48,932.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,006.87 : 120,009.87 = 32,621.78 : x
  2. Step 2: Convert to fraction form
    80,006.87/120,009.87 = 32,621.78/x
  3. Step 3: Cross multiply
    80,006.87x = 120,009.87 × 32,621.78
  4. Step 4: Simplify right side
    80,006.87x = 3,914,934,976.92
  5. Step 5: Solve for x
    x = 3,914,934,976.92/80,006.87
  6. Step 6: Final answer
    x = 48,932.48

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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.