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Finding the Fourth Proportional to 79,179.41, 118,769.90 and 20,015.10

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Solution

The fourth proportional to 79,179.41, 118,769.90 and 20,015.10 is: 30,022.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,179.41 : 118,769.90 = 20,015.10 : x
  2. Step 2: Convert to fraction form
    79,179.41/118,769.90 = 20,015.10/x
  3. Step 3: Cross multiply
    79,179.41x = 118,769.90 × 20,015.10
  4. Step 4: Simplify right side
    79,179.41x = 2,377,191,325.41
  5. Step 5: Solve for x
    x = 2,377,191,325.41/79,179.41
  6. Step 6: Final answer
    x = 30,022.85

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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.