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Finding the Fourth Proportional to 86,067.75, 118,773.54 and 48,342

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Solution

The fourth proportional to 86,067.75, 118,773.54 and 48,342 is: 66,711.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,067.75 : 118,773.54 = 48,342 : x
  2. Step 2: Convert to fraction form
    86,067.75/118,773.54 = 48,342/x
  3. Step 3: Cross multiply
    86,067.75x = 118,773.54 × 48,342
  4. Step 4: Simplify right side
    86,067.75x = 5,741,750,470.68
  5. Step 5: Solve for x
    x = 5,741,750,470.68/86,067.75
  6. Step 6: Final answer
    x = 66,711.99

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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.