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Finding the Fourth Proportional to 79,016.62, 118,515.80 and 19,847.78

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Solution

The fourth proportional to 79,016.62, 118,515.80 and 19,847.78 is: 29,769.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,016.62 : 118,515.80 = 19,847.78 : x
  2. Step 2: Convert to fraction form
    79,016.62/118,515.80 = 19,847.78/x
  3. Step 3: Cross multiply
    79,016.62x = 118,515.80 × 19,847.78
  4. Step 4: Simplify right side
    79,016.62x = 2,352,275,524.92
  5. Step 5: Solve for x
    x = 2,352,275,524.92/79,016.62
  6. Step 6: Final answer
    x = 29,769.38

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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.