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Finding the Third Proportional to 21,051 and 45,021

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Solution

The third proportional to 21,051 and 45,021 is: 96,284.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051 : 45,021 = 45,021 : x
  2. Step 2: Convert to fraction form
    21,051/45,021 = 45,021/x
  3. Step 3: Cross multiply
    21,051x = 45,021 × 45,021
  4. Step 4: Simplify right side
    21,051x = 2,026,890,441
  5. Step 5: Solve for x
    x = 2,026,890,441/21,051
  6. Step 6: Final answer
    x = 96,284.76

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.