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Finding the Third Proportional to 20,672 and 45,208

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Solution

The third proportional to 20,672 and 45,208 is: 98,866.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672 : 45,208 = 45,208 : x
  2. Step 2: Convert to fraction form
    20,672/45,208 = 45,208/x
  3. Step 3: Cross multiply
    20,672x = 45,208 × 45,208
  4. Step 4: Simplify right side
    20,672x = 2,043,763,264
  5. Step 5: Solve for x
    x = 2,043,763,264/20,672
  6. Step 6: Final answer
    x = 98,866.26

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.