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Finding the Third Proportional to 21,163.78 and 45,243.56

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Solution

The third proportional to 21,163.78 and 45,243.56 is: 96,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.78 : 45,243.56 = 45,243.56 : x
  2. Step 2: Convert to fraction form
    21,163.78/45,243.56 = 45,243.56/x
  3. Step 3: Cross multiply
    21,163.78x = 45,243.56 × 45,243.56
  4. Step 4: Simplify right side
    21,163.78x = 2,046,979,947.69
  5. Step 5: Solve for x
    x = 2,046,979,947.69/21,163.78
  6. Step 6: Final answer
    x = 96,720.90

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1.5x scale

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.