Home / 87,933.36-121,281.09-75,689.61

Finding the Fourth Proportional to 87,933.36, 121,281.09 and 75,689.61

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Solution

The fourth proportional to 87,933.36, 121,281.09 and 75,689.61 is: 104,394.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,933.36 : 121,281.09 = 75,689.61 : x
  2. Step 2: Convert to fraction form
    87,933.36/121,281.09 = 75,689.61/x
  3. Step 3: Cross multiply
    87,933.36x = 121,281.09 × 75,689.61
  4. Step 4: Simplify right side
    87,933.36x = 9,179,718,402.47
  5. Step 5: Solve for x
    x = 9,179,718,402.47/87,933.36
  6. Step 6: Final answer
    x = 104,394.04

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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.