Home / 80,198.33-120,242.81-40,679.24

Finding the Fourth Proportional to 80,198.33, 120,242.81 and 40,679.24

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Solution

The fourth proportional to 80,198.33, 120,242.81 and 40,679.24 is: 60,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,198.33 : 120,242.81 = 40,679.24 : x
  2. Step 2: Convert to fraction form
    80,198.33/120,242.81 = 40,679.24/x
  3. Step 3: Cross multiply
    80,198.33x = 120,242.81 × 40,679.24
  4. Step 4: Simplify right side
    80,198.33x = 4,891,385,321.65
  5. Step 5: Solve for x
    x = 4,891,385,321.65/80,198.33
  6. Step 6: Final answer
    x = 60,991.12

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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.