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Finding the Fourth Proportional to 48,656.30, 72,978.17 and 15,379.73

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Solution

The fourth proportional to 48,656.30, 72,978.17 and 15,379.73 is: 23,067.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,656.30 : 72,978.17 = 15,379.73 : x
  2. Step 2: Convert to fraction form
    48,656.30/72,978.17 = 15,379.73/x
  3. Step 3: Cross multiply
    48,656.30x = 72,978.17 × 15,379.73
  4. Step 4: Simplify right side
    48,656.30x = 1,122,384,512.14
  5. Step 5: Solve for x
    x = 1,122,384,512.14/48,656.30
  6. Step 6: Final answer
    x = 23,067.61

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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.