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Finding the Third Proportional to 39,660 and 58,392

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Solution

The third proportional to 39,660 and 58,392 is: 85,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660 : 58,392 = 58,392 : x
  2. Step 2: Convert to fraction form
    39,660/58,392 = 58,392/x
  3. Step 3: Cross multiply
    39,660x = 58,392 × 58,392
  4. Step 4: Simplify right side
    39,660x = 3,409,625,664
  5. Step 5: Solve for x
    x = 3,409,625,664/39,660
  6. Step 6: Final answer
    x = 85,971.40

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.