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Finding the Fourth Proportional to 69,714.54, 104,575.79 and 19,790.73

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Solution

The fourth proportional to 69,714.54, 104,575.79 and 19,790.73 is: 29,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,714.54 : 104,575.79 = 19,790.73 : x
  2. Step 2: Convert to fraction form
    69,714.54/104,575.79 = 19,790.73/x
  3. Step 3: Cross multiply
    69,714.54x = 104,575.79 × 19,790.73
  4. Step 4: Simplify right side
    69,714.54x = 2,069,631,224.43
  5. Step 5: Solve for x
    x = 2,069,631,224.43/69,714.54
  6. Step 6: Final answer
    x = 29,687.22

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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.