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Finding the Third Proportional to 25,140 and 39,087

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Solution

The third proportional to 25,140 and 39,087 is: 60,771.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,140 : 39,087 = 39,087 : x
  2. Step 2: Convert to fraction form
    25,140/39,087 = 39,087/x
  3. Step 3: Cross multiply
    25,140x = 39,087 × 39,087
  4. Step 4: Simplify right side
    25,140x = 1,527,793,569
  5. Step 5: Solve for x
    x = 1,527,793,569/25,140
  6. Step 6: Final answer
    x = 60,771.42

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.