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Finding the Fourth Proportional to 103,385.97, 155,093.54 and 36,811.87

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Solution

The fourth proportional to 103,385.97, 155,093.54 and 36,811.87 is: 55,222.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,385.97 : 155,093.54 = 36,811.87 : x
  2. Step 2: Convert to fraction form
    103,385.97/155,093.54 = 36,811.87/x
  3. Step 3: Cross multiply
    103,385.97x = 155,093.54 × 36,811.87
  4. Step 4: Simplify right side
    103,385.97x = 5,709,282,660.53
  5. Step 5: Solve for x
    x = 5,709,282,660.53/103,385.97
  6. Step 6: Final answer
    x = 55,222.99

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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.