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Finding the Fourth Proportional to 68,842.43, 103,266.17 and 18,926.43

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Solution

The fourth proportional to 68,842.43, 103,266.17 and 18,926.43 is: 28,390.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,842.43 : 103,266.17 = 18,926.43 : x
  2. Step 2: Convert to fraction form
    68,842.43/103,266.17 = 18,926.43/x
  3. Step 3: Cross multiply
    68,842.43x = 103,266.17 × 18,926.43
  4. Step 4: Simplify right side
    68,842.43x = 1,954,459,843.24
  5. Step 5: Solve for x
    x = 1,954,459,843.24/68,842.43
  6. Step 6: Final answer
    x = 28,390.34

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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.