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Finding the Fourth Proportional to 68,239.76, 94,171.54 and 39,946.04

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Solution

The fourth proportional to 68,239.76, 94,171.54 and 39,946.04 is: 55,125.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,239.76 : 94,171.54 = 39,946.04 : x
  2. Step 2: Convert to fraction form
    68,239.76/94,171.54 = 39,946.04/x
  3. Step 3: Cross multiply
    68,239.76x = 94,171.54 × 39,946.04
  4. Step 4: Simplify right side
    68,239.76x = 3,761,780,103.70
  5. Step 5: Solve for x
    x = 3,761,780,103.70/68,239.76
  6. Step 6: Final answer
    x = 55,125.93

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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.