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Finding the Fourth Proportional to 66,309.52, 99,474 and 19,556.32

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Solution

The fourth proportional to 66,309.52, 99,474 and 19,556.32 is: 29,337.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,309.52 : 99,474 = 19,556.32 : x
  2. Step 2: Convert to fraction form
    66,309.52/99,474 = 19,556.32/x
  3. Step 3: Cross multiply
    66,309.52x = 99,474 × 19,556.32
  4. Step 4: Simplify right side
    66,309.52x = 1,945,345,375.68
  5. Step 5: Solve for x
    x = 1,945,345,375.68/66,309.52
  6. Step 6: Final answer
    x = 29,337.35

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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.