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Finding the Fourth Proportional to 68,663.50, 102,815.02 and 55,265.29

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Solution

The fourth proportional to 68,663.50, 102,815.02 and 55,265.29 is: 82,752.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,663.50 : 102,815.02 = 55,265.29 : x
  2. Step 2: Convert to fraction form
    68,663.50/102,815.02 = 55,265.29/x
  3. Step 3: Cross multiply
    68,663.50x = 102,815.02 × 55,265.29
  4. Step 4: Simplify right side
    68,663.50x = 5,682,101,708.70
  5. Step 5: Solve for x
    x = 5,682,101,708.70/68,663.50
  6. Step 6: Final answer
    x = 82,752.87

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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.