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Finding the Fourth Proportional to 87,850.52, 121,116.48 and 65,954.10

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Solution

The fourth proportional to 87,850.52, 121,116.48 and 65,954.10 is: 90,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,850.52 : 121,116.48 = 65,954.10 : x
  2. Step 2: Convert to fraction form
    87,850.52/121,116.48 = 65,954.10/x
  3. Step 3: Cross multiply
    87,850.52x = 121,116.48 × 65,954.10
  4. Step 4: Simplify right side
    87,850.52x = 7,988,128,213.15
  5. Step 5: Solve for x
    x = 7,988,128,213.15/87,850.52
  6. Step 6: Final answer
    x = 90,928.63

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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.