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Finding the Fourth Proportional to 36,081.88, 54,128.58 and 11,115.88

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Solution

The fourth proportional to 36,081.88, 54,128.58 and 11,115.88 is: 16,675.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,081.88 : 54,128.58 = 11,115.88 : x
  2. Step 2: Convert to fraction form
    36,081.88/54,128.58 = 11,115.88/x
  3. Step 3: Cross multiply
    36,081.88x = 54,128.58 × 11,115.88
  4. Step 4: Simplify right side
    36,081.88x = 601,686,799.85
  5. Step 5: Solve for x
    x = 601,686,799.85/36,081.88
  6. Step 6: Final answer
    x = 16,675.59

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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.