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Finding the Third Proportional to 20,771 and 45,047

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Solution

The third proportional to 20,771 and 45,047 is: 97,695.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771 : 45,047 = 45,047 : x
  2. Step 2: Convert to fraction form
    20,771/45,047 = 45,047/x
  3. Step 3: Cross multiply
    20,771x = 45,047 × 45,047
  4. Step 4: Simplify right side
    20,771x = 2,029,232,209
  5. Step 5: Solve for x
    x = 2,029,232,209/20,771
  6. Step 6: Final answer
    x = 97,695.45

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.