Home / 80,863.20-121,294.92-28,272.60

Finding the Fourth Proportional to 80,863.20, 121,294.92 and 28,272.60

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Solution

The fourth proportional to 80,863.20, 121,294.92 and 28,272.60 is: 42,408.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,863.20 : 121,294.92 = 28,272.60 : x
  2. Step 2: Convert to fraction form
    80,863.20/121,294.92 = 28,272.60/x
  3. Step 3: Cross multiply
    80,863.20x = 121,294.92 × 28,272.60
  4. Step 4: Simplify right side
    80,863.20x = 3,429,322,755.19
  5. Step 5: Solve for x
    x = 3,429,322,755.19/80,863.20
  6. Step 6: Final answer
    x = 42,408.94

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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.