Home / 55,207.55-82,812.68-20,147.20

Finding the Fourth Proportional to 55,207.55, 82,812.68 and 20,147.20

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Solution

The fourth proportional to 55,207.55, 82,812.68 and 20,147.20 is: 30,221.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,207.55 : 82,812.68 = 20,147.20 : x
  2. Step 2: Convert to fraction form
    55,207.55/82,812.68 = 20,147.20/x
  3. Step 3: Cross multiply
    55,207.55x = 82,812.68 × 20,147.20
  4. Step 4: Simplify right side
    55,207.55x = 1,668,443,626.50
  5. Step 5: Solve for x
    x = 1,668,443,626.50/55,207.55
  6. Step 6: Final answer
    x = 30,221.29

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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.