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Finding the Fourth Proportional to 80,794.80, 121,247.55 and 28,204.29

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Solution

The fourth proportional to 80,794.80, 121,247.55 and 28,204.29 is: 42,325.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,794.80 : 121,247.55 = 28,204.29 : x
  2. Step 2: Convert to fraction form
    80,794.80/121,247.55 = 28,204.29/x
  3. Step 3: Cross multiply
    80,794.80x = 121,247.55 × 28,204.29
  4. Step 4: Simplify right side
    80,794.80x = 3,419,701,061.99
  5. Step 5: Solve for x
    x = 3,419,701,061.99/80,794.80
  6. Step 6: Final answer
    x = 42,325.76

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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.