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Finding the Fourth Proportional to 68,374, 102,609.60 and 26,821

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Solution

The fourth proportional to 68,374, 102,609.60 and 26,821 is: 40,250.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,374 : 102,609.60 = 26,821 : x
  2. Step 2: Convert to fraction form
    68,374/102,609.60 = 26,821/x
  3. Step 3: Cross multiply
    68,374x = 102,609.60 × 26,821
  4. Step 4: Simplify right side
    68,374x = 2,752,092,081.60
  5. Step 5: Solve for x
    x = 2,752,092,081.60/68,374
  6. Step 6: Final answer
    x = 40,250.56

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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.