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Finding the Fourth Proportional to 63,129.22, 87,162.36 and 39,266.62

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Solution

The fourth proportional to 63,129.22, 87,162.36 and 39,266.62 is: 54,215.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,129.22 : 87,162.36 = 39,266.62 : x
  2. Step 2: Convert to fraction form
    63,129.22/87,162.36 = 39,266.62/x
  3. Step 3: Cross multiply
    63,129.22x = 87,162.36 × 39,266.62
  4. Step 4: Simplify right side
    63,129.22x = 3,422,571,268.42
  5. Step 5: Solve for x
    x = 3,422,571,268.42/63,129.22
  6. Step 6: Final answer
    x = 54,215.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.