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Finding the Fourth Proportional to 90,992.88, 136,489.16 and 41,090.48

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Solution

The fourth proportional to 90,992.88, 136,489.16 and 41,090.48 is: 61,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,992.88 : 136,489.16 = 41,090.48 : x
  2. Step 2: Convert to fraction form
    90,992.88/136,489.16 = 41,090.48/x
  3. Step 3: Cross multiply
    90,992.88x = 136,489.16 × 41,090.48
  4. Step 4: Simplify right side
    90,992.88x = 5,608,405,099.20
  5. Step 5: Solve for x
    x = 5,608,405,099.20/90,992.88
  6. Step 6: Final answer
    x = 61,635.65

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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.