Home / 80,620.20-120,923.82-28,022.04

Finding the Fourth Proportional to 80,620.20, 120,923.82 and 28,022.04

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Solution

The fourth proportional to 80,620.20, 120,923.82 and 28,022.04 is: 42,030.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,620.20 : 120,923.82 = 28,022.04 : x
  2. Step 2: Convert to fraction form
    80,620.20/120,923.82 = 28,022.04/x
  3. Step 3: Cross multiply
    80,620.20x = 120,923.82 × 28,022.04
  4. Step 4: Simplify right side
    80,620.20x = 3,388,532,120.99
  5. Step 5: Solve for x
    x = 3,388,532,120.99/80,620.20
  6. Step 6: Final answer
    x = 42,030.81

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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.