Home / 80,181.12-120,330-35,857.92

Finding the Fourth Proportional to 80,181.12, 120,330 and 35,857.92

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Solution

The fourth proportional to 80,181.12, 120,330 and 35,857.92 is: 53,812.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,181.12 : 120,330 = 35,857.92 : x
  2. Step 2: Convert to fraction form
    80,181.12/120,330 = 35,857.92/x
  3. Step 3: Cross multiply
    80,181.12x = 120,330 × 35,857.92
  4. Step 4: Simplify right side
    80,181.12x = 4,314,783,513.60
  5. Step 5: Solve for x
    x = 4,314,783,513.60/80,181.12
  6. Step 6: Final answer
    x = 53,812.96

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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.