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Finding the Fourth Proportional to 80,793.60, 121,245.78 and 28,203.12

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Solution

The fourth proportional to 80,793.60, 121,245.78 and 28,203.12 is: 42,324.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,793.60 : 121,245.78 = 28,203.12 : x
  2. Step 2: Convert to fraction form
    80,793.60/121,245.78 = 28,203.12/x
  3. Step 3: Cross multiply
    80,793.60x = 121,245.78 × 28,203.12
  4. Step 4: Simplify right side
    80,793.60x = 3,419,509,282.83
  5. Step 5: Solve for x
    x = 3,419,509,282.83/80,793.60
  6. Step 6: Final answer
    x = 42,324.01

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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.