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Finding the Fourth Proportional to 79,441.92, 119,162.78 and 20,277.60

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Solution

The fourth proportional to 79,441.92, 119,162.78 and 20,277.60 is: 30,416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,441.92 : 119,162.78 = 20,277.60 : x
  2. Step 2: Convert to fraction form
    79,441.92/119,162.78 = 20,277.60/x
  3. Step 3: Cross multiply
    79,441.92x = 119,162.78 × 20,277.60
  4. Step 4: Simplify right side
    79,441.92x = 2,416,335,086.34
  5. Step 5: Solve for x
    x = 2,416,335,086.34/79,441.92
  6. Step 6: Final answer
    x = 30,416.37

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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.