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Finding the Third Proportional to 21,376 and 46,685

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Solution

The third proportional to 21,376 and 46,685 is: 101,959.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376 : 46,685 = 46,685 : x
  2. Step 2: Convert to fraction form
    21,376/46,685 = 46,685/x
  3. Step 3: Cross multiply
    21,376x = 46,685 × 46,685
  4. Step 4: Simplify right side
    21,376x = 2,179,489,225
  5. Step 5: Solve for x
    x = 2,179,489,225/21,376
  6. Step 6: Final answer
    x = 101,959.64

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.