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Finding the Fourth Proportional to 77,330, 115,912.08 and 50,665.92

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Solution

The fourth proportional to 77,330, 115,912.08 and 50,665.92 is: 75,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,330 : 115,912.08 = 50,665.92 : x
  2. Step 2: Convert to fraction form
    77,330/115,912.08 = 50,665.92/x
  3. Step 3: Cross multiply
    77,330x = 115,912.08 × 50,665.92
  4. Step 4: Simplify right side
    77,330x = 5,872,792,172.31
  5. Step 5: Solve for x
    x = 5,872,792,172.31/77,330
  6. Step 6: Final answer
    x = 75,944.55

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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.