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Finding the Fourth Proportional to 68,309.29, 102,474.87 and 28,866.79

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Solution

The fourth proportional to 68,309.29, 102,474.87 and 28,866.79 is: 43,304.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,309.29 : 102,474.87 = 28,866.79 : x
  2. Step 2: Convert to fraction form
    68,309.29/102,474.87 = 28,866.79/x
  3. Step 3: Cross multiply
    68,309.29x = 102,474.87 × 28,866.79
  4. Step 4: Simplify right side
    68,309.29x = 2,958,120,552.57
  5. Step 5: Solve for x
    x = 2,958,120,552.57/68,309.29
  6. Step 6: Final answer
    x = 43,304.81

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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.