Home / 91,121.92-136,688.24-27,942.68

Finding the Fourth Proportional to 91,121.92, 136,688.24 and 27,942.68

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Solution

The fourth proportional to 91,121.92, 136,688.24 and 27,942.68 is: 41,915.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,121.92 : 136,688.24 = 27,942.68 : x
  2. Step 2: Convert to fraction form
    91,121.92/136,688.24 = 27,942.68/x
  3. Step 3: Cross multiply
    91,121.92x = 136,688.24 × 27,942.68
  4. Step 4: Simplify right side
    91,121.92x = 3,819,436,294.94
  5. Step 5: Solve for x
    x = 3,819,436,294.94/91,121.92
  6. Step 6: Final answer
    x = 41,915.67

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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.