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Finding the Third Proportional to 40,860 and 64,206

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Solution

The third proportional to 40,860 and 64,206 is: 100,891.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,860 : 64,206 = 64,206 : x
  2. Step 2: Convert to fraction form
    40,860/64,206 = 64,206/x
  3. Step 3: Cross multiply
    40,860x = 64,206 × 64,206
  4. Step 4: Simplify right side
    40,860x = 4,122,410,436
  5. Step 5: Solve for x
    x = 4,122,410,436/40,860
  6. Step 6: Final answer
    x = 100,891.10

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.