Home / 81,930.42-122,770.44-55,177.49

Finding the Fourth Proportional to 81,930.42, 122,770.44 and 55,177.49

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Solution

The fourth proportional to 81,930.42, 122,770.44 and 55,177.49 is: 82,681.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,930.42 : 122,770.44 = 55,177.49 : x
  2. Step 2: Convert to fraction form
    81,930.42/122,770.44 = 55,177.49/x
  3. Step 3: Cross multiply
    81,930.42x = 122,770.44 × 55,177.49
  4. Step 4: Simplify right side
    81,930.42x = 6,774,164,725.40
  5. Step 5: Solve for x
    x = 6,774,164,725.40/81,930.42
  6. Step 6: Final answer
    x = 82,681.92

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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.