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Finding the Fourth Proportional to 68,577.60, 102,873.96 and 21,819.56

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Solution

The fourth proportional to 68,577.60, 102,873.96 and 21,819.56 is: 32,731.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,577.60 : 102,873.96 = 21,819.56 : x
  2. Step 2: Convert to fraction form
    68,577.60/102,873.96 = 21,819.56/x
  3. Step 3: Cross multiply
    68,577.60x = 102,873.96 × 21,819.56
  4. Step 4: Simplify right side
    68,577.60x = 2,244,664,542.66
  5. Step 5: Solve for x
    x = 2,244,664,542.66/68,577.60
  6. Step 6: Final answer
    x = 32,731.75

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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.