Home / 81,012.96-111,833.28-49,191.84

Finding the Fourth Proportional to 81,012.96, 111,833.28 and 49,191.84

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Solution

The fourth proportional to 81,012.96, 111,833.28 and 49,191.84 is: 67,906.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,012.96 : 111,833.28 = 49,191.84 : x
  2. Step 2: Convert to fraction form
    81,012.96/111,833.28 = 49,191.84/x
  3. Step 3: Cross multiply
    81,012.96x = 111,833.28 × 49,191.84
  4. Step 4: Simplify right side
    81,012.96x = 5,501,284,816.44
  5. Step 5: Solve for x
    x = 5,501,284,816.44/81,012.96
  6. Step 6: Final answer
    x = 67,906.23

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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.