Home / 80,286.27-120,539.97-40,870.86

Finding the Fourth Proportional to 80,286.27, 120,539.97 and 40,870.86

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Solution

The fourth proportional to 80,286.27, 120,539.97 and 40,870.86 is: 61,362.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,286.27 : 120,539.97 = 40,870.86 : x
  2. Step 2: Convert to fraction form
    80,286.27/120,539.97 = 40,870.86/x
  3. Step 3: Cross multiply
    80,286.27x = 120,539.97 × 40,870.86
  4. Step 4: Simplify right side
    80,286.27x = 4,926,572,238.27
  5. Step 5: Solve for x
    x = 4,926,572,238.27/80,286.27
  6. Step 6: Final answer
    x = 61,362.57

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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.