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Finding the Third Proportional to 43,322 and 66,143

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Solution

The third proportional to 43,322 and 66,143 is: 100,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,322 : 66,143 = 66,143 : x
  2. Step 2: Convert to fraction form
    43,322/66,143 = 66,143/x
  3. Step 3: Cross multiply
    43,322x = 66,143 × 66,143
  4. Step 4: Simplify right side
    43,322x = 4,374,896,449
  5. Step 5: Solve for x
    x = 4,374,896,449/43,322
  6. Step 6: Final answer
    x = 100,985.56

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.