Home / 81,664.39-122,262.90-55,322.38

Finding the Fourth Proportional to 81,664.39, 122,262.90 and 55,322.38

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Solution

The fourth proportional to 81,664.39, 122,262.90 and 55,322.38 is: 82,825.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,664.39 : 122,262.90 = 55,322.38 : x
  2. Step 2: Convert to fraction form
    81,664.39/122,262.90 = 55,322.38/x
  3. Step 3: Cross multiply
    81,664.39x = 122,262.90 × 55,322.38
  4. Step 4: Simplify right side
    81,664.39x = 6,763,874,613.70
  5. Step 5: Solve for x
    x = 6,763,874,613.70/81,664.39
  6. Step 6: Final answer
    x = 82,825.26

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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.