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Finding the Third Proportional to 31,109 and 48,039

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Solution

The third proportional to 31,109 and 48,039 is: 74,182.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,109 : 48,039 = 48,039 : x
  2. Step 2: Convert to fraction form
    31,109/48,039 = 48,039/x
  3. Step 3: Cross multiply
    31,109x = 48,039 × 48,039
  4. Step 4: Simplify right side
    31,109x = 2,307,745,521
  5. Step 5: Solve for x
    x = 2,307,745,521/31,109
  6. Step 6: Final answer
    x = 74,182.57

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.