Home / 87,908.40-121,310.82-49,669.56

Finding the Fourth Proportional to 87,908.40, 121,310.82 and 49,669.56

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Solution

The fourth proportional to 87,908.40, 121,310.82 and 49,669.56 is: 68,542.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,908.40 : 121,310.82 = 49,669.56 : x
  2. Step 2: Convert to fraction form
    87,908.40/121,310.82 = 49,669.56/x
  3. Step 3: Cross multiply
    87,908.40x = 121,310.82 × 49,669.56
  4. Step 4: Simplify right side
    87,908.40x = 6,025,455,052.64
  5. Step 5: Solve for x
    x = 6,025,455,052.64/87,908.40
  6. Step 6: Final answer
    x = 68,542.43

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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.