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Finding the Third Proportional to 19,485 and 40,908

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Solution

The third proportional to 19,485 and 40,908 is: 85,884.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485 : 40,908 = 40,908 : x
  2. Step 2: Convert to fraction form
    19,485/40,908 = 40,908/x
  3. Step 3: Cross multiply
    19,485x = 40,908 × 40,908
  4. Step 4: Simplify right side
    19,485x = 1,673,464,464
  5. Step 5: Solve for x
    x = 1,673,464,464/19,485
  6. Step 6: Final answer
    x = 85,884.76

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.