Home / 51,186.72-76,789.76-20,020

Finding the Fourth Proportional to 51,186.72, 76,789.76 and 20,020

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Solution

The fourth proportional to 51,186.72, 76,789.76 and 20,020 is: 30,033.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,186.72 : 76,789.76 = 20,020 : x
  2. Step 2: Convert to fraction form
    51,186.72/76,789.76 = 20,020/x
  3. Step 3: Cross multiply
    51,186.72x = 76,789.76 × 20,020
  4. Step 4: Simplify right side
    51,186.72x = 1,537,330,995.20
  5. Step 5: Solve for x
    x = 1,537,330,995.20/51,186.72
  6. Step 6: Final answer
    x = 30,033.79

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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.