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Finding the Fourth Proportional to 99,481.79, 149,128.87 and 49,514.64

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Solution

The fourth proportional to 99,481.79, 149,128.87 and 49,514.64 is: 74,225.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,481.79 : 149,128.87 = 49,514.64 : x
  2. Step 2: Convert to fraction form
    99,481.79/149,128.87 = 49,514.64/x
  3. Step 3: Cross multiply
    99,481.79x = 149,128.87 × 49,514.64
  4. Step 4: Simplify right side
    99,481.79x = 7,384,062,311.66
  5. Step 5: Solve for x
    x = 7,384,062,311.66/99,481.79
  6. Step 6: Final answer
    x = 74,225.27

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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.