Home / 281,021.55-421,554.33-81,344.94

Finding the Fourth Proportional to 281,021.55, 421,554.33 and 81,344.94

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Solution

The fourth proportional to 281,021.55, 421,554.33 and 81,344.94 is: 122,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,021.55 : 421,554.33 = 81,344.94 : x
  2. Step 2: Convert to fraction form
    281,021.55/421,554.33 = 81,344.94/x
  3. Step 3: Cross multiply
    281,021.55x = 421,554.33 × 81,344.94
  4. Step 4: Simplify right side
    281,021.55x = 34,291,311,680.59
  5. Step 5: Solve for x
    x = 34,291,311,680.59/281,021.55
  6. Step 6: Final answer
    x = 122,023.78

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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.