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Finding the Third Proportional to 21,629 and 46,491

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Solution

The third proportional to 21,629 and 46,491 is: 99,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,629 : 46,491 = 46,491 : x
  2. Step 2: Convert to fraction form
    21,629/46,491 = 46,491/x
  3. Step 3: Cross multiply
    21,629x = 46,491 × 46,491
  4. Step 4: Simplify right side
    21,629x = 2,161,413,081
  5. Step 5: Solve for x
    x = 2,161,413,081/21,629
  6. Step 6: Final answer
    x = 99,931.25

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.