Home / 81,929.42-122,768.94-55,176.49

Finding the Fourth Proportional to 81,929.42, 122,768.94 and 55,176.49

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Solution

The fourth proportional to 81,929.42, 122,768.94 and 55,176.49 is: 82,680.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,929.42 : 122,768.94 = 55,176.49 : x
  2. Step 2: Convert to fraction form
    81,929.42/122,768.94 = 55,176.49/x
  3. Step 3: Cross multiply
    81,929.42x = 122,768.94 × 55,176.49
  4. Step 4: Simplify right side
    81,929.42x = 6,773,958,576.38
  5. Step 5: Solve for x
    x = 6,773,958,576.38/81,929.42
  6. Step 6: Final answer
    x = 82,680.42

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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.