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Finding the Fourth Proportional to 80,630.80, 120,888.60 and 36,221.20

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Solution

The fourth proportional to 80,630.80, 120,888.60 and 36,221.20 is: 54,305.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,630.80 : 120,888.60 = 36,221.20 : x
  2. Step 2: Convert to fraction form
    80,630.80/120,888.60 = 36,221.20/x
  3. Step 3: Cross multiply
    80,630.80x = 120,888.60 × 36,221.20
  4. Step 4: Simplify right side
    80,630.80x = 4,378,730,158.32
  5. Step 5: Solve for x
    x = 4,378,730,158.32/80,630.80
  6. Step 6: Final answer
    x = 54,305.92

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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.