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Finding the Fourth Proportional to 80,471.88, 120,579.03 and 67,933.08

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Solution

The fourth proportional to 80,471.88, 120,579.03 and 67,933.08 is: 101,790.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,471.88 : 120,579.03 = 67,933.08 : x
  2. Step 2: Convert to fraction form
    80,471.88/120,579.03 = 67,933.08/x
  3. Step 3: Cross multiply
    80,471.88x = 120,579.03 × 67,933.08
  4. Step 4: Simplify right side
    80,471.88x = 8,191,304,891.31
  5. Step 5: Solve for x
    x = 8,191,304,891.31/80,471.88
  6. Step 6: Final answer
    x = 101,790.90

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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.