Home / 80,660.54-121,015.42-41,245.34

Finding the Fourth Proportional to 80,660.54, 121,015.42 and 41,245.34

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Solution

The fourth proportional to 80,660.54, 121,015.42 and 41,245.34 is: 61,880.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,660.54 : 121,015.42 = 41,245.34 : x
  2. Step 2: Convert to fraction form
    80,660.54/121,015.42 = 41,245.34/x
  3. Step 3: Cross multiply
    80,660.54x = 121,015.42 × 41,245.34
  4. Step 4: Simplify right side
    80,660.54x = 4,991,322,143.14
  5. Step 5: Solve for x
    x = 4,991,322,143.14/80,660.54
  6. Step 6: Final answer
    x = 61,880.59

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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.