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Finding the Fourth Proportional to 80,613.60, 120,797.20 and 54,220.64

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Solution

The fourth proportional to 80,613.60, 120,797.20 and 54,220.64 is: 81,248.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,613.60 : 120,797.20 = 54,220.64 : x
  2. Step 2: Convert to fraction form
    80,613.60/120,797.20 = 54,220.64/x
  3. Step 3: Cross multiply
    80,613.60x = 120,797.20 × 54,220.64
  4. Step 4: Simplify right side
    80,613.60x = 6,549,701,494.21
  5. Step 5: Solve for x
    x = 6,549,701,494.21/80,613.60
  6. Step 6: Final answer
    x = 81,248.10

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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.