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Finding the Fourth Proportional to 104,481.90, 156,790.05 and 57,768.30

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Solution

The fourth proportional to 104,481.90, 156,790.05 and 57,768.30 is: 86,689.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,481.90 : 156,790.05 = 57,768.30 : x
  2. Step 2: Convert to fraction form
    104,481.90/156,790.05 = 57,768.30/x
  3. Step 3: Cross multiply
    104,481.90x = 156,790.05 × 57,768.30
  4. Step 4: Simplify right side
    104,481.90x = 9,057,494,645.42
  5. Step 5: Solve for x
    x = 9,057,494,645.42/104,481.90
  6. Step 6: Final answer
    x = 86,689.61

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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.