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Finding the Fourth Proportional to 68,302.20, 102,447.54 and 38,626.68

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Solution

The fourth proportional to 68,302.20, 102,447.54 and 38,626.68 is: 57,936.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,302.20 : 102,447.54 = 38,626.68 : x
  2. Step 2: Convert to fraction form
    68,302.20/102,447.54 = 38,626.68/x
  3. Step 3: Cross multiply
    68,302.20x = 102,447.54 × 38,626.68
  4. Step 4: Simplify right side
    68,302.20x = 3,957,208,344.37
  5. Step 5: Solve for x
    x = 3,957,208,344.37/68,302.20
  6. Step 6: Final answer
    x = 57,936.76

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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.