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Finding the Fourth Proportional to 103,856.75, 155,722.73 and 40,601.54

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Solution

The fourth proportional to 103,856.75, 155,722.73 and 40,601.54 is: 60,877.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,856.75 : 155,722.73 = 40,601.54 : x
  2. Step 2: Convert to fraction form
    103,856.75/155,722.73 = 40,601.54/x
  3. Step 3: Cross multiply
    103,856.75x = 155,722.73 × 40,601.54
  4. Step 4: Simplify right side
    103,856.75x = 6,322,581,872.39
  5. Step 5: Solve for x
    x = 6,322,581,872.39/103,856.75
  6. Step 6: Final answer
    x = 60,877.91

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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.