Home / 82,079.43-123,115.04-28,754.90

Finding the Fourth Proportional to 82,079.43, 123,115.04 and 28,754.90

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Solution

The fourth proportional to 82,079.43, 123,115.04 and 28,754.90 is: 43,130.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,079.43 : 123,115.04 = 28,754.90 : x
  2. Step 2: Convert to fraction form
    82,079.43/123,115.04 = 28,754.90/x
  3. Step 3: Cross multiply
    82,079.43x = 123,115.04 × 28,754.90
  4. Step 4: Simplify right side
    82,079.43x = 3,540,160,663.70
  5. Step 5: Solve for x
    x = 3,540,160,663.70/82,079.43
  6. Step 6: Final answer
    x = 43,130.91

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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.