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Finding the Fourth Proportional to 80,562.67, 120,835.49 and 21,404.32

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Solution

The fourth proportional to 80,562.67, 120,835.49 and 21,404.32 is: 32,104.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,562.67 : 120,835.49 = 21,404.32 : x
  2. Step 2: Convert to fraction form
    80,562.67/120,835.49 = 21,404.32/x
  3. Step 3: Cross multiply
    80,562.67x = 120,835.49 × 21,404.32
  4. Step 4: Simplify right side
    80,562.67x = 2,586,400,891.14
  5. Step 5: Solve for x
    x = 2,586,400,891.14/80,562.67
  6. Step 6: Final answer
    x = 32,104.21

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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.