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Finding the Fourth Proportional to 77,292.94, 115,912.07 and 36,761.68

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Solution

The fourth proportional to 77,292.94, 115,912.07 and 36,761.68 is: 55,129.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,292.94 : 115,912.07 = 36,761.68 : x
  2. Step 2: Convert to fraction form
    77,292.94/115,912.07 = 36,761.68/x
  3. Step 3: Cross multiply
    77,292.94x = 115,912.07 × 36,761.68
  4. Step 4: Simplify right side
    77,292.94x = 4,261,121,880.85
  5. Step 5: Solve for x
    x = 4,261,121,880.85/77,292.94
  6. Step 6: Final answer
    x = 55,129.51

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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.