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Finding the Fourth Proportional to 68,842.92, 103,244.52 and 18,924.65

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Solution

The fourth proportional to 68,842.92, 103,244.52 and 18,924.65 is: 28,381.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,842.92 : 103,244.52 = 18,924.65 : x
  2. Step 2: Convert to fraction form
    68,842.92/103,244.52 = 18,924.65/x
  3. Step 3: Cross multiply
    68,842.92x = 103,244.52 × 18,924.65
  4. Step 4: Simplify right side
    68,842.92x = 1,953,865,889.20
  5. Step 5: Solve for x
    x = 1,953,865,889.20/68,842.92
  6. Step 6: Final answer
    x = 28,381.51

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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.