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Finding the Fourth Proportional to 103,786.65, 155,601.54 and 43,833.69

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Solution

The fourth proportional to 103,786.65, 155,601.54 and 43,833.69 is: 65,717.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,786.65 : 155,601.54 = 43,833.69 : x
  2. Step 2: Convert to fraction form
    103,786.65/155,601.54 = 43,833.69/x
  3. Step 3: Cross multiply
    103,786.65x = 155,601.54 × 43,833.69
  4. Step 4: Simplify right side
    103,786.65x = 6,820,589,667.88
  5. Step 5: Solve for x
    x = 6,820,589,667.88/103,786.65
  6. Step 6: Final answer
    x = 65,717.41

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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.