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Finding the Third Proportional to 21,981 and 48,445

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Solution

The third proportional to 21,981 and 48,445 is: 106,770.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981 : 48,445 = 48,445 : x
  2. Step 2: Convert to fraction form
    21,981/48,445 = 48,445/x
  3. Step 3: Cross multiply
    21,981x = 48,445 × 48,445
  4. Step 4: Simplify right side
    21,981x = 2,346,918,025
  5. Step 5: Solve for x
    x = 2,346,918,025/21,981
  6. Step 6: Final answer
    x = 106,770.30

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.