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Finding the Fourth Proportional to 79,827, 119,740.02 and 20,662.44

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Solution

The fourth proportional to 79,827, 119,740.02 and 20,662.44 is: 30,993.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,827 : 119,740.02 = 20,662.44 : x
  2. Step 2: Convert to fraction form
    79,827/119,740.02 = 20,662.44/x
  3. Step 3: Cross multiply
    79,827x = 119,740.02 × 20,662.44
  4. Step 4: Simplify right side
    79,827x = 2,474,120,978.85
  5. Step 5: Solve for x
    x = 2,474,120,978.85/79,827
  6. Step 6: Final answer
    x = 30,993.54

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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.