Home / 80,446.12-120,709.38-36,104.56

Finding the Fourth Proportional to 80,446.12, 120,709.38 and 36,104.56

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Solution

The fourth proportional to 80,446.12, 120,709.38 and 36,104.56 is: 54,174.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,446.12 : 120,709.38 = 36,104.56 : x
  2. Step 2: Convert to fraction form
    80,446.12/120,709.38 = 36,104.56/x
  3. Step 3: Cross multiply
    80,446.12x = 120,709.38 × 36,104.56
  4. Step 4: Simplify right side
    80,446.12x = 4,358,159,052.77
  5. Step 5: Solve for x
    x = 4,358,159,052.77/80,446.12
  6. Step 6: Final answer
    x = 54,174.88

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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.