Home / 81,181.13-111,990.87-50,951.52

Finding the Fourth Proportional to 81,181.13, 111,990.87 and 50,951.52

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Solution

The fourth proportional to 81,181.13, 111,990.87 and 50,951.52 is: 70,288.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,181.13 : 111,990.87 = 50,951.52 : x
  2. Step 2: Convert to fraction form
    81,181.13/111,990.87 = 50,951.52/x
  3. Step 3: Cross multiply
    81,181.13x = 111,990.87 × 50,951.52
  4. Step 4: Simplify right side
    81,181.13x = 5,706,105,052.62
  5. Step 5: Solve for x
    x = 5,706,105,052.62/81,181.13
  6. Step 6: Final answer
    x = 70,288.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.