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Finding the Fourth Proportional to 87,952.63, 121,375.07 and 47,666.39

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Solution

The fourth proportional to 87,952.63, 121,375.07 and 47,666.39 is: 65,779.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,952.63 : 121,375.07 = 47,666.39 : x
  2. Step 2: Convert to fraction form
    87,952.63/121,375.07 = 47,666.39/x
  3. Step 3: Cross multiply
    87,952.63x = 121,375.07 × 47,666.39
  4. Step 4: Simplify right side
    87,952.63x = 5,785,511,422.90
  5. Step 5: Solve for x
    x = 5,785,511,422.90/87,952.63
  6. Step 6: Final answer
    x = 65,779.86

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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.