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Finding the Fourth Proportional to 68,997.46, 103,496.19 and 21,612.96

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Solution

The fourth proportional to 68,997.46, 103,496.19 and 21,612.96 is: 32,419.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,997.46 : 103,496.19 = 21,612.96 : x
  2. Step 2: Convert to fraction form
    68,997.46/103,496.19 = 21,612.96/x
  3. Step 3: Cross multiply
    68,997.46x = 103,496.19 × 21,612.96
  4. Step 4: Simplify right side
    68,997.46x = 2,236,859,014.62
  5. Step 5: Solve for x
    x = 2,236,859,014.62/68,997.46
  6. Step 6: Final answer
    x = 32,419.44

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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.