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Finding the Fourth Proportional to 66,644.32, 99,972.32 and 27,204.16

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Solution

The fourth proportional to 66,644.32, 99,972.32 and 27,204.16 is: 40,808.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,644.32 : 99,972.32 = 27,204.16 : x
  2. Step 2: Convert to fraction form
    66,644.32/99,972.32 = 27,204.16/x
  3. Step 3: Cross multiply
    66,644.32x = 99,972.32 × 27,204.16
  4. Step 4: Simplify right side
    66,644.32x = 2,719,662,988.85
  5. Step 5: Solve for x
    x = 2,719,662,988.85/66,644.32
  6. Step 6: Final answer
    x = 40,808.62

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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.