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Finding the Fourth Proportional to 68,865.94, 103,494.03 and 40,791.34

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Solution

The fourth proportional to 68,865.94, 103,494.03 and 40,791.34 is: 61,302.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,865.94 : 103,494.03 = 40,791.34 : x
  2. Step 2: Convert to fraction form
    68,865.94/103,494.03 = 40,791.34/x
  3. Step 3: Cross multiply
    68,865.94x = 103,494.03 × 40,791.34
  4. Step 4: Simplify right side
    68,865.94x = 4,221,660,165.70
  5. Step 5: Solve for x
    x = 4,221,660,165.70/68,865.94
  6. Step 6: Final answer
    x = 61,302.59

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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.