Home / 80,565.72-111,194.01-67,115.67

Finding the Fourth Proportional to 80,565.72, 111,194.01 and 67,115.67

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Solution

The fourth proportional to 80,565.72, 111,194.01 and 67,115.67 is: 92,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,565.72 : 111,194.01 = 67,115.67 : x
  2. Step 2: Convert to fraction form
    80,565.72/111,194.01 = 67,115.67/x
  3. Step 3: Cross multiply
    80,565.72x = 111,194.01 × 67,115.67
  4. Step 4: Simplify right side
    80,565.72x = 7,462,860,481.14
  5. Step 5: Solve for x
    x = 7,462,860,481.14/80,565.72
  6. Step 6: Final answer
    x = 92,630.72

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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.