Home / 80,121.92-120,132.32-27,526.72

Finding the Fourth Proportional to 80,121.92, 120,132.32 and 27,526.72

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Solution

The fourth proportional to 80,121.92, 120,132.32 and 27,526.72 is: 41,272.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,121.92 : 120,132.32 = 27,526.72 : x
  2. Step 2: Convert to fraction form
    80,121.92/120,132.32 = 27,526.72/x
  3. Step 3: Cross multiply
    80,121.92x = 120,132.32 × 27,526.72
  4. Step 4: Simplify right side
    80,121.92x = 3,306,848,735.59
  5. Step 5: Solve for x
    x = 3,306,848,735.59/80,121.92
  6. Step 6: Final answer
    x = 41,272.71

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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.