Home / 81,743.54-122,549.14-25,554.72

Finding the Fourth Proportional to 81,743.54, 122,549.14 and 25,554.72

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Solution

The fourth proportional to 81,743.54, 122,549.14 and 25,554.72 is: 38,311.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,743.54 : 122,549.14 = 25,554.72 : x
  2. Step 2: Convert to fraction form
    81,743.54/122,549.14 = 25,554.72/x
  3. Step 3: Cross multiply
    81,743.54x = 122,549.14 × 25,554.72
  4. Step 4: Simplify right side
    81,743.54x = 3,131,708,958.94
  5. Step 5: Solve for x
    x = 3,131,708,958.94/81,743.54
  6. Step 6: Final answer
    x = 38,311.39

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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.