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Finding the Fourth Proportional to 79,183.68, 118,764.54 and 20,015.76

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Solution

The fourth proportional to 79,183.68, 118,764.54 and 20,015.76 is: 30,020.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,183.68 : 118,764.54 = 20,015.76 : x
  2. Step 2: Convert to fraction form
    79,183.68/118,764.54 = 20,015.76/x
  3. Step 3: Cross multiply
    79,183.68x = 118,764.54 × 20,015.76
  4. Step 4: Simplify right side
    79,183.68x = 2,377,162,529.15
  5. Step 5: Solve for x
    x = 2,377,162,529.15/79,183.68
  6. Step 6: Final answer
    x = 30,020.86

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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.