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Finding the Fourth Proportional to 86,797.87, 119,782 and 50,989.39

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Solution

The fourth proportional to 86,797.87, 119,782 and 50,989.39 is: 70,365.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,797.87 : 119,782 = 50,989.39 : x
  2. Step 2: Convert to fraction form
    86,797.87/119,782 = 50,989.39/x
  3. Step 3: Cross multiply
    86,797.87x = 119,782 × 50,989.39
  4. Step 4: Simplify right side
    86,797.87x = 6,107,611,112.98
  5. Step 5: Solve for x
    x = 6,107,611,112.98/86,797.87
  6. Step 6: Final answer
    x = 70,365.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.