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Finding the Third Proportional to 30,678 and 47,503

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Solution

The third proportional to 30,678 and 47,503 is: 73,555.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,678 : 47,503 = 47,503 : x
  2. Step 2: Convert to fraction form
    30,678/47,503 = 47,503/x
  3. Step 3: Cross multiply
    30,678x = 47,503 × 47,503
  4. Step 4: Simplify right side
    30,678x = 2,256,535,009
  5. Step 5: Solve for x
    x = 2,256,535,009/30,678
  6. Step 6: Final answer
    x = 73,555.48

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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.