Home / 82,629.89-123,752.60-80,357.03

Finding the Fourth Proportional to 82,629.89, 123,752.60 and 80,357.03

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Solution

The fourth proportional to 82,629.89, 123,752.60 and 80,357.03 is: 120,348.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,629.89 : 123,752.60 = 80,357.03 : x
  2. Step 2: Convert to fraction form
    82,629.89/123,752.60 = 80,357.03/x
  3. Step 3: Cross multiply
    82,629.89x = 123,752.60 × 80,357.03
  4. Step 4: Simplify right side
    82,629.89x = 9,944,391,390.78
  5. Step 5: Solve for x
    x = 9,944,391,390.78/82,629.89
  6. Step 6: Final answer
    x = 120,348.60

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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.