Home / 80,715.30-111,401.04-50,512.86

Finding the Fourth Proportional to 80,715.30, 111,401.04 and 50,512.86

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Solution

The fourth proportional to 80,715.30, 111,401.04 and 50,512.86 is: 69,716.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,715.30 : 111,401.04 = 50,512.86 : x
  2. Step 2: Convert to fraction form
    80,715.30/111,401.04 = 50,512.86/x
  3. Step 3: Cross multiply
    80,715.30x = 111,401.04 × 50,512.86
  4. Step 4: Simplify right side
    80,715.30x = 5,627,185,137.37
  5. Step 5: Solve for x
    x = 5,627,185,137.37/80,715.30
  6. Step 6: Final answer
    x = 69,716.46

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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.