Home / 87,742.97-121,085.32-49,510.63

Finding the Fourth Proportional to 87,742.97, 121,085.32 and 49,510.63

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Solution

The fourth proportional to 87,742.97, 121,085.32 and 49,510.63 is: 68,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,742.97 : 121,085.32 = 49,510.63 : x
  2. Step 2: Convert to fraction form
    87,742.97/121,085.32 = 49,510.63/x
  3. Step 3: Cross multiply
    87,742.97x = 121,085.32 × 49,510.63
  4. Step 4: Simplify right side
    87,742.97x = 5,995,010,476.95
  5. Step 5: Solve for x
    x = 5,995,010,476.95/87,742.97
  6. Step 6: Final answer
    x = 68,324.68

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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.