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Finding the Fourth Proportional to 90,493.17, 135,785.03 and 40,608.93

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Solution

The fourth proportional to 90,493.17, 135,785.03 and 40,608.93 is: 60,933.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,493.17 : 135,785.03 = 40,608.93 : x
  2. Step 2: Convert to fraction form
    90,493.17/135,785.03 = 40,608.93/x
  3. Step 3: Cross multiply
    90,493.17x = 135,785.03 × 40,608.93
  4. Step 4: Simplify right side
    90,493.17x = 5,514,084,575.27
  5. Step 5: Solve for x
    x = 5,514,084,575.27/90,493.17
  6. Step 6: Final answer
    x = 60,933.71

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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.