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Finding the Fourth Proportional to 81,874.42, 122,841.66 and 34,501.43

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Solution

The fourth proportional to 81,874.42, 122,841.66 and 34,501.43 is: 51,764.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,874.42 : 122,841.66 = 34,501.43 : x
  2. Step 2: Convert to fraction form
    81,874.42/122,841.66 = 34,501.43/x
  3. Step 3: Cross multiply
    81,874.42x = 122,841.66 × 34,501.43
  4. Step 4: Simplify right side
    81,874.42x = 4,238,213,370.06
  5. Step 5: Solve for x
    x = 4,238,213,370.06/81,874.42
  6. Step 6: Final answer
    x = 51,764.81

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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.