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Finding the Fourth Proportional to 36,620.80, 54,931.20 and 34,163.20

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Solution

The fourth proportional to 36,620.80, 54,931.20 and 34,163.20 is: 51,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,620.80 : 54,931.20 = 34,163.20 : x
  2. Step 2: Convert to fraction form
    36,620.80/54,931.20 = 34,163.20/x
  3. Step 3: Cross multiply
    36,620.80x = 54,931.20 × 34,163.20
  4. Step 4: Simplify right side
    36,620.80x = 1,876,625,571.84
  5. Step 5: Solve for x
    x = 1,876,625,571.84/36,620.80
  6. Step 6: Final answer
    x = 51,244.80

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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.