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Finding the Fourth Proportional to 90,606.60, 135,933.30 and 34,447.68

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Solution

The fourth proportional to 90,606.60, 135,933.30 and 34,447.68 is: 51,680.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,606.60 : 135,933.30 = 34,447.68 : x
  2. Step 2: Convert to fraction form
    90,606.60/135,933.30 = 34,447.68/x
  3. Step 3: Cross multiply
    90,606.60x = 135,933.30 × 34,447.68
  4. Step 4: Simplify right side
    90,606.60x = 4,682,586,819.74
  5. Step 5: Solve for x
    x = 4,682,586,819.74/90,606.60
  6. Step 6: Final answer
    x = 51,680.42

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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.