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Finding the Fourth Proportional to 68,791.74, 94,942.34 and 38,171.71

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Solution

The fourth proportional to 68,791.74, 94,942.34 and 38,171.71 is: 52,682.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,791.74 : 94,942.34 = 38,171.71 : x
  2. Step 2: Convert to fraction form
    68,791.74/94,942.34 = 38,171.71/x
  3. Step 3: Cross multiply
    68,791.74x = 94,942.34 × 38,171.71
  4. Step 4: Simplify right side
    68,791.74x = 3,624,111,469.20
  5. Step 5: Solve for x
    x = 3,624,111,469.20/68,791.74
  6. Step 6: Final answer
    x = 52,682.36

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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.