Home / 82,221.20-123,310.40-34,811.90

Finding the Fourth Proportional to 82,221.20, 123,310.40 and 34,811.90

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Solution

The fourth proportional to 82,221.20, 123,310.40 and 34,811.90 is: 52,208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,221.20 : 123,310.40 = 34,811.90 : x
  2. Step 2: Convert to fraction form
    82,221.20/123,310.40 = 34,811.90/x
  3. Step 3: Cross multiply
    82,221.20x = 123,310.40 × 34,811.90
  4. Step 4: Simplify right side
    82,221.20x = 4,292,668,523.15
  5. Step 5: Solve for x
    x = 4,292,668,523.15/82,221.20
  6. Step 6: Final answer
    x = 52,208.78

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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.