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Finding the Fourth Proportional to 36,408.28, 54,620.22 and 20,620.77

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Solution

The fourth proportional to 36,408.28, 54,620.22 and 20,620.77 is: 30,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,408.28 : 54,620.22 = 20,620.77 : x
  2. Step 2: Convert to fraction form
    36,408.28/54,620.22 = 20,620.77/x
  3. Step 3: Cross multiply
    36,408.28x = 54,620.22 × 20,620.77
  4. Step 4: Simplify right side
    36,408.28x = 1,126,310,890.87
  5. Step 5: Solve for x
    x = 1,126,310,890.87/36,408.28
  6. Step 6: Final answer
    x = 30,935.57

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1.5x scale

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.