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Finding the Third Proportional to 39,972 and 57,748

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Solution

The third proportional to 39,972 and 57,748 is: 83,429.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,972 : 57,748 = 57,748 : x
  2. Step 2: Convert to fraction form
    39,972/57,748 = 57,748/x
  3. Step 3: Cross multiply
    39,972x = 57,748 × 57,748
  4. Step 4: Simplify right side
    39,972x = 3,334,831,504
  5. Step 5: Solve for x
    x = 3,334,831,504/39,972
  6. Step 6: Final answer
    x = 83,429.19

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.