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Finding the Fourth Proportional to 80,937.85, 121,441.80 and 43,454.20

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Solution

The fourth proportional to 80,937.85, 121,441.80 and 43,454.20 is: 65,200.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937.85 : 121,441.80 = 43,454.20 : x
  2. Step 2: Convert to fraction form
    80,937.85/121,441.80 = 43,454.20/x
  3. Step 3: Cross multiply
    80,937.85x = 121,441.80 × 43,454.20
  4. Step 4: Simplify right side
    80,937.85x = 5,277,156,265.56
  5. Step 5: Solve for x
    x = 5,277,156,265.56/80,937.85
  6. Step 6: Final answer
    x = 65,200.10

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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.