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Finding the Third Proportional to 35,120 and 77,624

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Solution

The third proportional to 35,120 and 77,624 is: 171,568.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,120 : 77,624 = 77,624 : x
  2. Step 2: Convert to fraction form
    35,120/77,624 = 77,624/x
  3. Step 3: Cross multiply
    35,120x = 77,624 × 77,624
  4. Step 4: Simplify right side
    35,120x = 6,025,485,376
  5. Step 5: Solve for x
    x = 6,025,485,376/35,120
  6. Step 6: Final answer
    x = 171,568.49

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.