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Finding the Fourth Proportional to 68,520.96, 102,781.44 and 21,773.84

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Solution

The fourth proportional to 68,520.96, 102,781.44 and 21,773.84 is: 32,660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,520.96 : 102,781.44 = 21,773.84 : x
  2. Step 2: Convert to fraction form
    68,520.96/102,781.44 = 21,773.84/x
  3. Step 3: Cross multiply
    68,520.96x = 102,781.44 × 21,773.84
  4. Step 4: Simplify right side
    68,520.96x = 2,237,946,115.62
  5. Step 5: Solve for x
    x = 2,237,946,115.62/68,520.96
  6. Step 6: Final answer
    x = 32,660.75

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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.