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Finding the Fourth Proportional to 87,854.66, 121,239.24 and 47,568.45

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Solution

The fourth proportional to 87,854.66, 121,239.24 and 47,568.45 is: 65,644.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.66 : 121,239.24 = 47,568.45 : x
  2. Step 2: Convert to fraction form
    87,854.66/121,239.24 = 47,568.45/x
  3. Step 3: Cross multiply
    87,854.66x = 121,239.24 × 47,568.45
  4. Step 4: Simplify right side
    87,854.66x = 5,767,162,725.98
  5. Step 5: Solve for x
    x = 5,767,162,725.98/87,854.66
  6. Step 6: Final answer
    x = 65,644.36

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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.