Home / 76,921.38-106,149.96-43,387.38

Finding the Fourth Proportional to 76,921.38, 106,149.96 and 43,387.38

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Solution

The fourth proportional to 76,921.38, 106,149.96 and 43,387.38 is: 59,873.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,921.38 : 106,149.96 = 43,387.38 : x
  2. Step 2: Convert to fraction form
    76,921.38/106,149.96 = 43,387.38/x
  3. Step 3: Cross multiply
    76,921.38x = 106,149.96 × 43,387.38
  4. Step 4: Simplify right side
    76,921.38x = 4,605,568,651.50
  5. Step 5: Solve for x
    x = 4,605,568,651.50/76,921.38
  6. Step 6: Final answer
    x = 59,873.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.