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Finding the Third Proportional to 52,551 and 78,880

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Solution

The third proportional to 52,551 and 78,880 is: 118,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,551 : 78,880 = 78,880 : x
  2. Step 2: Convert to fraction form
    52,551/78,880 = 78,880/x
  3. Step 3: Cross multiply
    52,551x = 78,880 × 78,880
  4. Step 4: Simplify right side
    52,551x = 6,222,054,400
  5. Step 5: Solve for x
    x = 6,222,054,400/52,551
  6. Step 6: Final answer
    x = 118,400.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.