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Finding the Fourth Proportional to 80,491.32, 120,737.28 and 27,900.96

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Solution

The fourth proportional to 80,491.32, 120,737.28 and 27,900.96 is: 41,851.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,491.32 : 120,737.28 = 27,900.96 : x
  2. Step 2: Convert to fraction form
    80,491.32/120,737.28 = 27,900.96/x
  3. Step 3: Cross multiply
    80,491.32x = 120,737.28 × 27,900.96
  4. Step 4: Simplify right side
    80,491.32x = 3,368,685,671.65
  5. Step 5: Solve for x
    x = 3,368,685,671.65/80,491.32
  6. Step 6: Final answer
    x = 41,851.54

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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.