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Finding the Fourth Proportional to 55,306.80, 82,960.20 and 18,370.80

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Solution

The fourth proportional to 55,306.80, 82,960.20 and 18,370.80 is: 27,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,306.80 : 82,960.20 = 18,370.80 : x
  2. Step 2: Convert to fraction form
    55,306.80/82,960.20 = 18,370.80/x
  3. Step 3: Cross multiply
    55,306.80x = 82,960.20 × 18,370.80
  4. Step 4: Simplify right side
    55,306.80x = 1,524,045,242.16
  5. Step 5: Solve for x
    x = 1,524,045,242.16/55,306.80
  6. Step 6: Final answer
    x = 27,556.20

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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.