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Finding the Fourth Proportional to 90,479.52, 135,764.24 and 40,594.86

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Solution

The fourth proportional to 90,479.52, 135,764.24 and 40,594.86 is: 60,912.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,479.52 : 135,764.24 = 40,594.86 : x
  2. Step 2: Convert to fraction form
    90,479.52/135,764.24 = 40,594.86/x
  3. Step 3: Cross multiply
    90,479.52x = 135,764.24 × 40,594.86
  4. Step 4: Simplify right side
    90,479.52x = 5,511,330,112.83
  5. Step 5: Solve for x
    x = 5,511,330,112.83/90,479.52
  6. Step 6: Final answer
    x = 60,912.46

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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.