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Finding the Fourth Proportional to 68,295.80, 102,443.33 and 18,371.84

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Solution

The fourth proportional to 68,295.80, 102,443.33 and 18,371.84 is: 27,557.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,295.80 : 102,443.33 = 18,371.84 : x
  2. Step 2: Convert to fraction form
    68,295.80/102,443.33 = 18,371.84/x
  3. Step 3: Cross multiply
    68,295.80x = 102,443.33 × 18,371.84
  4. Step 4: Simplify right side
    68,295.80x = 1,882,071,863.75
  5. Step 5: Solve for x
    x = 1,882,071,863.75/68,295.80
  6. Step 6: Final answer
    x = 27,557.65

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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.