Home / 71,917.76-99,249.87-40,086.89

Finding the Fourth Proportional to 71,917.76, 99,249.87 and 40,086.89

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Solution

The fourth proportional to 71,917.76, 99,249.87 and 40,086.89 is: 55,321.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,917.76 : 99,249.87 = 40,086.89 : x
  2. Step 2: Convert to fraction form
    71,917.76/99,249.87 = 40,086.89/x
  3. Step 3: Cross multiply
    71,917.76x = 99,249.87 × 40,086.89
  4. Step 4: Simplify right side
    71,917.76x = 3,978,618,621.20
  5. Step 5: Solve for x
    x = 3,978,618,621.20/71,917.76
  6. Step 6: Final answer
    x = 55,321.78

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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.