Home / 87,761.97-121,111.16-47,475.64

Finding the Fourth Proportional to 87,761.97, 121,111.16 and 47,475.64

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Solution

The fourth proportional to 87,761.97, 121,111.16 and 47,475.64 is: 65,516.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,761.97 : 121,111.16 = 47,475.64 : x
  2. Step 2: Convert to fraction form
    87,761.97/121,111.16 = 47,475.64/x
  3. Step 3: Cross multiply
    87,761.97x = 121,111.16 × 47,475.64
  4. Step 4: Simplify right side
    87,761.97x = 5,749,829,198.43
  5. Step 5: Solve for x
    x = 5,749,829,198.43/87,761.97
  6. Step 6: Final answer
    x = 65,516.18

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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.