Home / 80,902.90-121,334.91-41,439.70

Finding the Fourth Proportional to 80,902.90, 121,334.91 and 41,439.70

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Solution

The fourth proportional to 80,902.90, 121,334.91 and 41,439.70 is: 62,149.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,902.90 : 121,334.91 = 41,439.70 : x
  2. Step 2: Convert to fraction form
    80,902.90/121,334.91 = 41,439.70/x
  3. Step 3: Cross multiply
    80,902.90x = 121,334.91 × 41,439.70
  4. Step 4: Simplify right side
    80,902.90x = 5,028,082,269.93
  5. Step 5: Solve for x
    x = 5,028,082,269.93/80,902.90
  6. Step 6: Final answer
    x = 62,149.59

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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.