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Finding the Fourth Proportional to 80,400.60, 120,608.10 and 33,643.80

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Solution

The fourth proportional to 80,400.60, 120,608.10 and 33,643.80 is: 50,468.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,400.60 : 120,608.10 = 33,643.80 : x
  2. Step 2: Convert to fraction form
    80,400.60/120,608.10 = 33,643.80/x
  3. Step 3: Cross multiply
    80,400.60x = 120,608.10 × 33,643.80
  4. Step 4: Simplify right side
    80,400.60x = 4,057,714,794.78
  5. Step 5: Solve for x
    x = 4,057,714,794.78/80,400.60
  6. Step 6: Final answer
    x = 50,468.71

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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.