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Finding the Fourth Proportional to 80,006.81, 120,009.78 and 32,621.72

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Solution

The fourth proportional to 80,006.81, 120,009.78 and 32,621.72 is: 48,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,006.81 : 120,009.78 = 32,621.72 : x
  2. Step 2: Convert to fraction form
    80,006.81/120,009.78 = 32,621.72/x
  3. Step 3: Cross multiply
    80,006.81x = 120,009.78 × 32,621.72
  4. Step 4: Simplify right side
    80,006.81x = 3,914,924,677.26
  5. Step 5: Solve for x
    x = 3,914,924,677.26/80,006.81
  6. Step 6: Final answer
    x = 48,932.40

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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.