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Finding the Fourth Proportional to 67,330, 100,995 and 25,777

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Solution

The fourth proportional to 67,330, 100,995 and 25,777 is: 38,665.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,330 : 100,995 = 25,777 : x
  2. Step 2: Convert to fraction form
    67,330/100,995 = 25,777/x
  3. Step 3: Cross multiply
    67,330x = 100,995 × 25,777
  4. Step 4: Simplify right side
    67,330x = 2,603,348,115
  5. Step 5: Solve for x
    x = 2,603,348,115/67,330
  6. Step 6: Final answer
    x = 38,665.50

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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.