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Finding the Third Proportional to 25,172 and 51,438

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Solution

The third proportional to 25,172 and 51,438 is: 105,111.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,172 : 51,438 = 51,438 : x
  2. Step 2: Convert to fraction form
    25,172/51,438 = 51,438/x
  3. Step 3: Cross multiply
    25,172x = 51,438 × 51,438
  4. Step 4: Simplify right side
    25,172x = 2,645,867,844
  5. Step 5: Solve for x
    x = 2,645,867,844/25,172
  6. Step 6: Final answer
    x = 105,111.55

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.