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Finding the Fourth Proportional to 36,138.80, 54,121.80 and 29,226.80

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Solution

The fourth proportional to 36,138.80, 54,121.80 and 29,226.80 is: 43,770.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138.80 : 54,121.80 = 29,226.80 : x
  2. Step 2: Convert to fraction form
    36,138.80/54,121.80 = 29,226.80/x
  3. Step 3: Cross multiply
    36,138.80x = 54,121.80 × 29,226.80
  4. Step 4: Simplify right side
    36,138.80x = 1,581,807,024.24
  5. Step 5: Solve for x
    x = 1,581,807,024.24/36,138.80
  6. Step 6: Final answer
    x = 43,770.33

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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.