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Finding the Fourth Proportional to 36,117.70, 54,163.08 and 12,418.54

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Solution

The fourth proportional to 36,117.70, 54,163.08 and 12,418.54 is: 18,623.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,117.70 : 54,163.08 = 12,418.54 : x
  2. Step 2: Convert to fraction form
    36,117.70/54,163.08 = 12,418.54/x
  3. Step 3: Cross multiply
    36,117.70x = 54,163.08 × 12,418.54
  4. Step 4: Simplify right side
    36,117.70x = 672,626,375.50
  5. Step 5: Solve for x
    x = 672,626,375.50/36,117.70
  6. Step 6: Final answer
    x = 18,623.18

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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.