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Finding the Fourth Proportional to 81,670.87, 122,514.78 and 22,506.55

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Solution

The fourth proportional to 81,670.87, 122,514.78 and 22,506.55 is: 33,762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,670.87 : 122,514.78 = 22,506.55 : x
  2. Step 2: Convert to fraction form
    81,670.87/122,514.78 = 22,506.55/x
  3. Step 3: Cross multiply
    81,670.87x = 122,514.78 × 22,506.55
  4. Step 4: Simplify right side
    81,670.87x = 2,757,385,021.81
  5. Step 5: Solve for x
    x = 2,757,385,021.81/81,670.87
  6. Step 6: Final answer
    x = 33,762.16

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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.