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Finding the Fourth Proportional to 68,678.80, 103,029.83 and 23,687.94

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Solution

The fourth proportional to 68,678.80, 103,029.83 and 23,687.94 is: 35,535.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,678.80 : 103,029.83 = 23,687.94 : x
  2. Step 2: Convert to fraction form
    68,678.80/103,029.83 = 23,687.94/x
  3. Step 3: Cross multiply
    68,678.80x = 103,029.83 × 23,687.94
  4. Step 4: Simplify right side
    68,678.80x = 2,440,564,431.25
  5. Step 5: Solve for x
    x = 2,440,564,431.25/68,678.80
  6. Step 6: Final answer
    x = 35,535.92

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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.