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Finding the Fourth Proportional to 90,133.56, 135,219.65 and 26,958.56

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Solution

The fourth proportional to 90,133.56, 135,219.65 and 26,958.56 is: 40,443.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,133.56 : 135,219.65 = 26,958.56 : x
  2. Step 2: Convert to fraction form
    90,133.56/135,219.65 = 26,958.56/x
  3. Step 3: Cross multiply
    90,133.56x = 135,219.65 × 26,958.56
  4. Step 4: Simplify right side
    90,133.56x = 3,645,326,236.81
  5. Step 5: Solve for x
    x = 3,645,326,236.81/90,133.56
  6. Step 6: Final answer
    x = 40,443.61

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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.