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Finding the Third Proportional to 21,836 and 47,672

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Solution

The third proportional to 21,836 and 47,672 is: 104,076.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836 : 47,672 = 47,672 : x
  2. Step 2: Convert to fraction form
    21,836/47,672 = 47,672/x
  3. Step 3: Cross multiply
    21,836x = 47,672 × 47,672
  4. Step 4: Simplify right side
    21,836x = 2,272,619,584
  5. Step 5: Solve for x
    x = 2,272,619,584/21,836
  6. Step 6: Final answer
    x = 104,076.73

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.