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Finding the Fourth Proportional to 68,843.18, 103,267.31 and 18,927.18

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Solution

The fourth proportional to 68,843.18, 103,267.31 and 18,927.18 is: 28,391.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,843.18 : 103,267.31 = 18,927.18 : x
  2. Step 2: Convert to fraction form
    68,843.18/103,267.31 = 18,927.18/x
  3. Step 3: Cross multiply
    68,843.18x = 103,267.31 × 18,927.18
  4. Step 4: Simplify right side
    68,843.18x = 1,954,558,869.85
  5. Step 5: Solve for x
    x = 1,954,558,869.85/68,843.18
  6. Step 6: Final answer
    x = 28,391.47

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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.