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Finding the Fourth Proportional to 64,993.92, 89,690.45 and 36,311.73

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Solution

The fourth proportional to 64,993.92, 89,690.45 and 36,311.73 is: 50,109.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,993.92 : 89,690.45 = 36,311.73 : x
  2. Step 2: Convert to fraction form
    64,993.92/89,690.45 = 36,311.73/x
  3. Step 3: Cross multiply
    64,993.92x = 89,690.45 × 36,311.73
  4. Step 4: Simplify right side
    64,993.92x = 3,256,815,222.42
  5. Step 5: Solve for x
    x = 3,256,815,222.42/64,993.92
  6. Step 6: Final answer
    x = 50,109.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.