Home / 81,626.24-122,448-29,040.64

Finding the Fourth Proportional to 81,626.24, 122,448 and 29,040.64

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Solution

The fourth proportional to 81,626.24, 122,448 and 29,040.64 is: 43,564.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,626.24 : 122,448 = 29,040.64 : x
  2. Step 2: Convert to fraction form
    81,626.24/122,448 = 29,040.64/x
  3. Step 3: Cross multiply
    81,626.24x = 122,448 × 29,040.64
  4. Step 4: Simplify right side
    81,626.24x = 3,555,968,286.72
  5. Step 5: Solve for x
    x = 3,555,968,286.72/81,626.24
  6. Step 6: Final answer
    x = 43,564.03

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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.