Home / 66,042.54-91,122.17-39,183.75

Finding the Fourth Proportional to 66,042.54, 91,122.17 and 39,183.75

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Solution

The fourth proportional to 66,042.54, 91,122.17 and 39,183.75 is: 54,063.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.54 : 91,122.17 = 39,183.75 : x
  2. Step 2: Convert to fraction form
    66,042.54/91,122.17 = 39,183.75/x
  3. Step 3: Cross multiply
    66,042.54x = 91,122.17 × 39,183.75
  4. Step 4: Simplify right side
    66,042.54x = 3,570,508,132.82
  5. Step 5: Solve for x
    x = 3,570,508,132.82/66,042.54
  6. Step 6: Final answer
    x = 54,063.76

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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.