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Finding the Fourth Proportional to 64,162.78, 96,255.11 and 19,781.26

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Solution

The fourth proportional to 64,162.78, 96,255.11 and 19,781.26 is: 29,675.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,162.78 : 96,255.11 = 19,781.26 : x
  2. Step 2: Convert to fraction form
    64,162.78/96,255.11 = 19,781.26/x
  3. Step 3: Cross multiply
    64,162.78x = 96,255.11 × 19,781.26
  4. Step 4: Simplify right side
    64,162.78x = 1,904,047,651.85
  5. Step 5: Solve for x
    x = 1,904,047,651.85/64,162.78
  6. Step 6: Final answer
    x = 29,675.27

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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.