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Finding the Fourth Proportional to 87,879.33, 121,272.80 and 47,592.97

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Solution

The fourth proportional to 87,879.33, 121,272.80 and 47,592.97 is: 65,677.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,879.33 : 121,272.80 = 47,592.97 : x
  2. Step 2: Convert to fraction form
    87,879.33/121,272.80 = 47,592.97/x
  3. Step 3: Cross multiply
    87,879.33x = 121,272.80 × 47,592.97
  4. Step 4: Simplify right side
    87,879.33x = 5,771,732,191.07
  5. Step 5: Solve for x
    x = 5,771,732,191.07/87,879.33
  6. Step 6: Final answer
    x = 65,677.93

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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.