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Finding the Fourth Proportional to 68,067.92, 102,101.88 and 31,106

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Solution

The fourth proportional to 68,067.92, 102,101.88 and 31,106 is: 46,659.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,067.92 : 102,101.88 = 31,106 : x
  2. Step 2: Convert to fraction form
    68,067.92/102,101.88 = 31,106/x
  3. Step 3: Cross multiply
    68,067.92x = 102,101.88 × 31,106
  4. Step 4: Simplify right side
    68,067.92x = 3,175,981,079.28
  5. Step 5: Solve for x
    x = 3,175,981,079.28/68,067.92
  6. Step 6: Final answer
    x = 46,659.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.