Home / 80,766.89-111,439.26-67,895.11

Finding the Fourth Proportional to 80,766.89, 111,439.26 and 67,895.11

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Solution

The fourth proportional to 80,766.89, 111,439.26 and 67,895.11 is: 93,679.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,766.89 : 111,439.26 = 67,895.11 : x
  2. Step 2: Convert to fraction form
    80,766.89/111,439.26 = 67,895.11/x
  3. Step 3: Cross multiply
    80,766.89x = 111,439.26 × 67,895.11
  4. Step 4: Simplify right side
    80,766.89x = 7,566,180,537.42
  5. Step 5: Solve for x
    x = 7,566,180,537.42/80,766.89
  6. Step 6: Final answer
    x = 93,679.24

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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.