Home / 80,400.84-120,601.26-27,781.62

Finding the Fourth Proportional to 80,400.84, 120,601.26 and 27,781.62

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Solution

The fourth proportional to 80,400.84, 120,601.26 and 27,781.62 is: 41,672.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,400.84 : 120,601.26 = 27,781.62 : x
  2. Step 2: Convert to fraction form
    80,400.84/120,601.26 = 27,781.62/x
  3. Step 3: Cross multiply
    80,400.84x = 120,601.26 × 27,781.62
  4. Step 4: Simplify right side
    80,400.84x = 3,350,498,376.84
  5. Step 5: Solve for x
    x = 3,350,498,376.84/80,400.84
  6. Step 6: Final answer
    x = 41,672.43

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1.5x scale

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.