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Finding the Fourth Proportional to 90,594.72, 135,760.80 and 51,067.74

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Solution

The fourth proportional to 90,594.72, 135,760.80 and 51,067.74 is: 76,527.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,594.72 : 135,760.80 = 51,067.74 : x
  2. Step 2: Convert to fraction form
    90,594.72/135,760.80 = 51,067.74/x
  3. Step 3: Cross multiply
    90,594.72x = 135,760.80 × 51,067.74
  4. Step 4: Simplify right side
    90,594.72x = 6,932,997,236.59
  5. Step 5: Solve for x
    x = 6,932,997,236.59/90,594.72
  6. Step 6: Final answer
    x = 76,527.61

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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.