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Finding the Fourth Proportional to 73,005.30, 109,447.20 and 30,917.70

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Solution

The fourth proportional to 73,005.30, 109,447.20 and 30,917.70 is: 46,350.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,005.30 : 109,447.20 = 30,917.70 : x
  2. Step 2: Convert to fraction form
    73,005.30/109,447.20 = 30,917.70/x
  3. Step 3: Cross multiply
    73,005.30x = 109,447.20 × 30,917.70
  4. Step 4: Simplify right side
    73,005.30x = 3,383,855,695.44
  5. Step 5: Solve for x
    x = 3,383,855,695.44/73,005.30
  6. Step 6: Final answer
    x = 46,350.82

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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.