Home / 87,951.22-121,372.37-47,665.97

Finding the Fourth Proportional to 87,951.22, 121,372.37 and 47,665.97

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Solution

The fourth proportional to 87,951.22, 121,372.37 and 47,665.97 is: 65,778.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,951.22 : 121,372.37 = 47,665.97 : x
  2. Step 2: Convert to fraction form
    87,951.22/121,372.37 = 47,665.97/x
  3. Step 3: Cross multiply
    87,951.22x = 121,372.37 × 47,665.97
  4. Step 4: Simplify right side
    87,951.22x = 5,785,331,804.07
  5. Step 5: Solve for x
    x = 5,785,331,804.07/87,951.22
  6. Step 6: Final answer
    x = 65,778.87

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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.