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Finding the Third Proportional to 39,431 and 61,091

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Solution

The third proportional to 39,431 and 61,091 is: 94,649.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431 : 61,091 = 61,091 : x
  2. Step 2: Convert to fraction form
    39,431/61,091 = 61,091/x
  3. Step 3: Cross multiply
    39,431x = 61,091 × 61,091
  4. Step 4: Simplify right side
    39,431x = 3,732,110,281
  5. Step 5: Solve for x
    x = 3,732,110,281/39,431
  6. Step 6: Final answer
    x = 94,649.14

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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.