Home / 80,639.68-120,961.20-29,346.59

Finding the Fourth Proportional to 80,639.68, 120,961.20 and 29,346.59

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Solution

The fourth proportional to 80,639.68, 120,961.20 and 29,346.59 is: 44,020.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,639.68 : 120,961.20 = 29,346.59 : x
  2. Step 2: Convert to fraction form
    80,639.68/120,961.20 = 29,346.59/x
  3. Step 3: Cross multiply
    80,639.68x = 120,961.20 × 29,346.59
  4. Step 4: Simplify right side
    80,639.68x = 3,549,797,990.77
  5. Step 5: Solve for x
    x = 3,549,797,990.77/80,639.68
  6. Step 6: Final answer
    x = 44,020.49

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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.