Home / 80,571.72-111,202.29-67,121.67

Finding the Fourth Proportional to 80,571.72, 111,202.29 and 67,121.67

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Solution

The fourth proportional to 80,571.72, 111,202.29 and 67,121.67 is: 92,639.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,571.72 : 111,202.29 = 67,121.67 : x
  2. Step 2: Convert to fraction form
    80,571.72/111,202.29 = 67,121.67/x
  3. Step 3: Cross multiply
    80,571.72x = 111,202.29 × 67,121.67
  4. Step 4: Simplify right side
    80,571.72x = 7,464,083,412.62
  5. Step 5: Solve for x
    x = 7,464,083,412.62/80,571.72
  6. Step 6: Final answer
    x = 92,639.00

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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.