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Finding the Third Proportional to 39,186 and 57,138

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Solution

The third proportional to 39,186 and 57,138 is: 83,314.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,186 : 57,138 = 57,138 : x
  2. Step 2: Convert to fraction form
    39,186/57,138 = 57,138/x
  3. Step 3: Cross multiply
    39,186x = 57,138 × 57,138
  4. Step 4: Simplify right side
    39,186x = 3,264,751,044
  5. Step 5: Solve for x
    x = 3,264,751,044/39,186
  6. Step 6: Final answer
    x = 83,314.22

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.