Home / 80,342.55-120,428.85-29,709.04

Finding the Fourth Proportional to 80,342.55, 120,428.85 and 29,709.04

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Solution

The fourth proportional to 80,342.55, 120,428.85 and 29,709.04 is: 44,532.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,342.55 : 120,428.85 = 29,709.04 : x
  2. Step 2: Convert to fraction form
    80,342.55/120,428.85 = 29,709.04/x
  3. Step 3: Cross multiply
    80,342.55x = 120,428.85 × 29,709.04
  4. Step 4: Simplify right side
    80,342.55x = 3,577,825,521.80
  5. Step 5: Solve for x
    x = 3,577,825,521.80/80,342.55
  6. Step 6: Final answer
    x = 44,532.14

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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.