Home / 80,717.50-111,445.02-50,515.03

Finding the Fourth Proportional to 80,717.50, 111,445.02 and 50,515.03

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Solution

The fourth proportional to 80,717.50, 111,445.02 and 50,515.03 is: 69,745.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,717.50 : 111,445.02 = 50,515.03 : x
  2. Step 2: Convert to fraction form
    80,717.50/111,445.02 = 50,515.03/x
  3. Step 3: Cross multiply
    80,717.50x = 111,445.02 × 50,515.03
  4. Step 4: Simplify right side
    80,717.50x = 5,629,647,718.85
  5. Step 5: Solve for x
    x = 5,629,647,718.85/80,717.50
  6. Step 6: Final answer
    x = 69,745.07

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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.