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Finding the Fourth Proportional to 80,556.20, 120,834.30 and 33,900.20

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Solution

The fourth proportional to 80,556.20, 120,834.30 and 33,900.20 is: 50,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,556.20 : 120,834.30 = 33,900.20 : x
  2. Step 2: Convert to fraction form
    80,556.20/120,834.30 = 33,900.20/x
  3. Step 3: Cross multiply
    80,556.20x = 120,834.30 × 33,900.20
  4. Step 4: Simplify right side
    80,556.20x = 4,096,306,936.86
  5. Step 5: Solve for x
    x = 4,096,306,936.86/80,556.20
  6. Step 6: Final answer
    x = 50,850.30

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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.