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Finding the Fourth Proportional to 82,696.98, 123,976.08 and 68,617.56

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Solution

The fourth proportional to 82,696.98, 123,976.08 and 68,617.56 is: 102,868.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,696.98 : 123,976.08 = 68,617.56 : x
  2. Step 2: Convert to fraction form
    82,696.98/123,976.08 = 68,617.56/x
  3. Step 3: Cross multiply
    82,696.98x = 123,976.08 × 68,617.56
  4. Step 4: Simplify right side
    82,696.98x = 8,506,936,107.96
  5. Step 5: Solve for x
    x = 8,506,936,107.96/82,696.98
  6. Step 6: Final answer
    x = 102,868.76

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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.