Home / 80,563.20-120,868.92-27,972.96

Finding the Fourth Proportional to 80,563.20, 120,868.92 and 27,972.96

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Solution

The fourth proportional to 80,563.20, 120,868.92 and 27,972.96 is: 41,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,563.20 : 120,868.92 = 27,972.96 : x
  2. Step 2: Convert to fraction form
    80,563.20/120,868.92 = 27,972.96/x
  3. Step 3: Cross multiply
    80,563.20x = 120,868.92 × 27,972.96
  4. Step 4: Simplify right side
    80,563.20x = 3,381,061,464.40
  5. Step 5: Solve for x
    x = 3,381,061,464.40/80,563.20
  6. Step 6: Final answer
    x = 41,967.81

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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.