Home / 80,974.53-121,539.57-39,450.69

Finding the Fourth Proportional to 80,974.53, 121,539.57 and 39,450.69

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Solution

The fourth proportional to 80,974.53, 121,539.57 and 39,450.69 is: 59,213.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,974.53 : 121,539.57 = 39,450.69 : x
  2. Step 2: Convert to fraction form
    80,974.53/121,539.57 = 39,450.69/x
  3. Step 3: Cross multiply
    80,974.53x = 121,539.57 × 39,450.69
  4. Step 4: Simplify right side
    80,974.53x = 4,794,819,898.80
  5. Step 5: Solve for x
    x = 4,794,819,898.80/80,974.53
  6. Step 6: Final answer
    x = 59,213.93

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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.