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Finding the Fourth Proportional to 63,856, 95,799.36 and 20,080

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Solution

The fourth proportional to 63,856, 95,799.36 and 20,080 is: 30,124.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,856 : 95,799.36 = 20,080 : x
  2. Step 2: Convert to fraction form
    63,856/95,799.36 = 20,080/x
  3. Step 3: Cross multiply
    63,856x = 95,799.36 × 20,080
  4. Step 4: Simplify right side
    63,856x = 1,923,651,148.80
  5. Step 5: Solve for x
    x = 1,923,651,148.80/63,856
  6. Step 6: Final answer
    x = 30,124.83

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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.