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Finding the Third Proportional to 30,983 and 47,874

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Solution

The third proportional to 30,983 and 47,874 is: 73,973.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,983 : 47,874 = 47,874 : x
  2. Step 2: Convert to fraction form
    30,983/47,874 = 47,874/x
  3. Step 3: Cross multiply
    30,983x = 47,874 × 47,874
  4. Step 4: Simplify right side
    30,983x = 2,291,919,876
  5. Step 5: Solve for x
    x = 2,291,919,876/30,983
  6. Step 6: Final answer
    x = 73,973.47

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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.