Home / 43,472.20-65,189.10-20,105.80

Finding the Fourth Proportional to 43,472.20, 65,189.10 and 20,105.80

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Solution

The fourth proportional to 43,472.20, 65,189.10 and 20,105.80 is: 30,149.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,472.20 : 65,189.10 = 20,105.80 : x
  2. Step 2: Convert to fraction form
    43,472.20/65,189.10 = 20,105.80/x
  3. Step 3: Cross multiply
    43,472.20x = 65,189.10 × 20,105.80
  4. Step 4: Simplify right side
    43,472.20x = 1,310,679,006.78
  5. Step 5: Solve for x
    x = 1,310,679,006.78/43,472.20
  6. Step 6: Final answer
    x = 30,149.82

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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.