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Finding the Third Proportional to 45,990 and 68,580

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Solution

The third proportional to 45,990 and 68,580 is: 102,266.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,990 : 68,580 = 68,580 : x
  2. Step 2: Convert to fraction form
    45,990/68,580 = 68,580/x
  3. Step 3: Cross multiply
    45,990x = 68,580 × 68,580
  4. Step 4: Simplify right side
    45,990x = 4,703,216,400
  5. Step 5: Solve for x
    x = 4,703,216,400/45,990
  6. Step 6: Final answer
    x = 102,266.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.