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Finding the Third Proportional to 55,015 and 74,291

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Solution

The third proportional to 55,015 and 74,291 is: 100,320.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,015 : 74,291 = 74,291 : x
  2. Step 2: Convert to fraction form
    55,015/74,291 = 74,291/x
  3. Step 3: Cross multiply
    55,015x = 74,291 × 74,291
  4. Step 4: Simplify right side
    55,015x = 5,519,152,681
  5. Step 5: Solve for x
    x = 5,519,152,681/55,015
  6. Step 6: Final answer
    x = 100,320.87

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.