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Finding the Third Proportional to 18,320 and 39,484

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Solution

The third proportional to 18,320 and 39,484 is: 85,097.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320 : 39,484 = 39,484 : x
  2. Step 2: Convert to fraction form
    18,320/39,484 = 39,484/x
  3. Step 3: Cross multiply
    18,320x = 39,484 × 39,484
  4. Step 4: Simplify right side
    18,320x = 1,558,986,256
  5. Step 5: Solve for x
    x = 1,558,986,256/18,320
  6. Step 6: Final answer
    x = 85,097.50

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.