Home / 87,868.12-121,262.42-51,571.14

Finding the Fourth Proportional to 87,868.12, 121,262.42 and 51,571.14

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Solution

The fourth proportional to 87,868.12, 121,262.42 and 51,571.14 is: 71,170.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,868.12 : 121,262.42 = 51,571.14 : x
  2. Step 2: Convert to fraction form
    87,868.12/121,262.42 = 51,571.14/x
  3. Step 3: Cross multiply
    87,868.12x = 121,262.42 × 51,571.14
  4. Step 4: Simplify right side
    87,868.12x = 6,253,641,377.16
  5. Step 5: Solve for x
    x = 6,253,641,377.16/87,868.12
  6. Step 6: Final answer
    x = 71,170.76

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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.