Home / 81,028.05-111,867.98-55,576.23

Finding the Fourth Proportional to 81,028.05, 111,867.98 and 55,576.23

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Solution

The fourth proportional to 81,028.05, 111,867.98 and 55,576.23 is: 76,728.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,028.05 : 111,867.98 = 55,576.23 : x
  2. Step 2: Convert to fraction form
    81,028.05/111,867.98 = 55,576.23/x
  3. Step 3: Cross multiply
    81,028.05x = 111,867.98 × 55,576.23
  4. Step 4: Simplify right side
    81,028.05x = 6,217,200,586.12
  5. Step 5: Solve for x
    x = 6,217,200,586.12/81,028.05
  6. Step 6: Final answer
    x = 76,728.99

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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.