Home / 82,839.06-124,273.20-30,321.90

Finding the Fourth Proportional to 82,839.06, 124,273.20 and 30,321.90

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Solution

The fourth proportional to 82,839.06, 124,273.20 and 30,321.90 is: 45,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,839.06 : 124,273.20 = 30,321.90 : x
  2. Step 2: Convert to fraction form
    82,839.06/124,273.20 = 30,321.90/x
  3. Step 3: Cross multiply
    82,839.06x = 124,273.20 × 30,321.90
  4. Step 4: Simplify right side
    82,839.06x = 3,768,199,543.08
  5. Step 5: Solve for x
    x = 3,768,199,543.08/82,839.06
  6. Step 6: Final answer
    x = 45,488.20

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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.