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Finding the Third Proportional to 48,390 and 77,049

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Solution

The third proportional to 48,390 and 77,049 is: 122,681.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,390 : 77,049 = 77,049 : x
  2. Step 2: Convert to fraction form
    48,390/77,049 = 77,049/x
  3. Step 3: Cross multiply
    48,390x = 77,049 × 77,049
  4. Step 4: Simplify right side
    48,390x = 5,936,548,401
  5. Step 5: Solve for x
    x = 5,936,548,401/48,390
  6. Step 6: Final answer
    x = 122,681.31

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.