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Finding the Fourth Proportional to 36,481.79, 54,722.70 and 8,779.79

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Solution

The fourth proportional to 36,481.79, 54,722.70 and 8,779.79 is: 13,169.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,481.79 : 54,722.70 = 8,779.79 : x
  2. Step 2: Convert to fraction form
    36,481.79/54,722.70 = 8,779.79/x
  3. Step 3: Cross multiply
    36,481.79x = 54,722.70 × 8,779.79
  4. Step 4: Simplify right side
    36,481.79x = 480,453,951.04
  5. Step 5: Solve for x
    x = 480,453,951.04/36,481.79
  6. Step 6: Final answer
    x = 13,169.69

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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.