Home / 87,729.31-121,064.94-49,488.94

Finding the Fourth Proportional to 87,729.31, 121,064.94 and 49,488.94

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Solution

The fourth proportional to 87,729.31, 121,064.94 and 49,488.94 is: 68,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,729.31 : 121,064.94 = 49,488.94 : x
  2. Step 2: Convert to fraction form
    87,729.31/121,064.94 = 49,488.94/x
  3. Step 3: Cross multiply
    87,729.31x = 121,064.94 × 49,488.94
  4. Step 4: Simplify right side
    87,729.31x = 5,991,375,551.76
  5. Step 5: Solve for x
    x = 5,991,375,551.76/87,729.31
  6. Step 6: Final answer
    x = 68,293.89

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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.