Home / 80,538.12-120,705.12-45,497.52

Finding the Fourth Proportional to 80,538.12, 120,705.12 and 45,497.52

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Solution

The fourth proportional to 80,538.12, 120,705.12 and 45,497.52 is: 68,188.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,538.12 : 120,705.12 = 45,497.52 : x
  2. Step 2: Convert to fraction form
    80,538.12/120,705.12 = 45,497.52/x
  3. Step 3: Cross multiply
    80,538.12x = 120,705.12 × 45,497.52
  4. Step 4: Simplify right side
    80,538.12x = 5,491,783,611.30
  5. Step 5: Solve for x
    x = 5,491,783,611.30/80,538.12
  6. Step 6: Final answer
    x = 68,188.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.