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Finding the Third Proportional to 21,645 and 45,021.75

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Solution

The third proportional to 21,645 and 45,021.75 is: 93,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,645 : 45,021.75 = 45,021.75 : x
  2. Step 2: Convert to fraction form
    21,645/45,021.75 = 45,021.75/x
  3. Step 3: Cross multiply
    21,645x = 45,021.75 × 45,021.75
  4. Step 4: Simplify right side
    21,645x = 2,026,957,973.06
  5. Step 5: Solve for x
    x = 2,026,957,973.06/21,645
  6. Step 6: Final answer
    x = 93,645.55

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.