Home / 80,986.05-111,732.03-54,145.53

Finding the Fourth Proportional to 80,986.05, 111,732.03 and 54,145.53

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Solution

The fourth proportional to 80,986.05, 111,732.03 and 54,145.53 is: 74,701.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986.05 : 111,732.03 = 54,145.53 : x
  2. Step 2: Convert to fraction form
    80,986.05/111,732.03 = 54,145.53/x
  3. Step 3: Cross multiply
    80,986.05x = 111,732.03 × 54,145.53
  4. Step 4: Simplify right side
    80,986.05x = 6,049,789,982.33
  5. Step 5: Solve for x
    x = 6,049,789,982.33/80,986.05
  6. Step 6: Final answer
    x = 74,701.63

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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.