Home / 87,717.30-121,042.89-49,464.57

Finding the Fourth Proportional to 87,717.30, 121,042.89 and 49,464.57

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Solution

The fourth proportional to 87,717.30, 121,042.89 and 49,464.57 is: 68,257.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,717.30 : 121,042.89 = 49,464.57 : x
  2. Step 2: Convert to fraction form
    87,717.30/121,042.89 = 49,464.57/x
  3. Step 3: Cross multiply
    87,717.30x = 121,042.89 × 49,464.57
  4. Step 4: Simplify right side
    87,717.30x = 5,987,334,959.32
  5. Step 5: Solve for x
    x = 5,987,334,959.32/87,717.30
  6. Step 6: Final answer
    x = 68,257.18

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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.