Home / 81,961.81-122,942.64-29,408.20

Finding the Fourth Proportional to 81,961.81, 122,942.64 and 29,408.20

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Solution

The fourth proportional to 81,961.81, 122,942.64 and 29,408.20 is: 44,112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,961.81 : 122,942.64 = 29,408.20 : x
  2. Step 2: Convert to fraction form
    81,961.81/122,942.64 = 29,408.20/x
  3. Step 3: Cross multiply
    81,961.81x = 122,942.64 × 29,408.20
  4. Step 4: Simplify right side
    81,961.81x = 3,615,521,745.65
  5. Step 5: Solve for x
    x = 3,615,521,745.65/81,961.81
  6. Step 6: Final answer
    x = 44,112.27

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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.