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Finding the Third Proportional to 45,371 and 70,419

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Solution

The third proportional to 45,371 and 70,419 is: 109,295.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,371 : 70,419 = 70,419 : x
  2. Step 2: Convert to fraction form
    45,371/70,419 = 70,419/x
  3. Step 3: Cross multiply
    45,371x = 70,419 × 70,419
  4. Step 4: Simplify right side
    45,371x = 4,958,835,561
  5. Step 5: Solve for x
    x = 4,958,835,561/45,371
  6. Step 6: Final answer
    x = 109,295.27

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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.