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Finding the Fourth Proportional to 64,743.89, 89,345.16 and 36,063.44

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Solution

The fourth proportional to 64,743.89, 89,345.16 and 36,063.44 is: 49,766.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,743.89 : 89,345.16 = 36,063.44 : x
  2. Step 2: Convert to fraction form
    64,743.89/89,345.16 = 36,063.44/x
  3. Step 3: Cross multiply
    64,743.89x = 89,345.16 × 36,063.44
  4. Step 4: Simplify right side
    64,743.89x = 3,222,093,816.95
  5. Step 5: Solve for x
    x = 3,222,093,816.95/64,743.89
  6. Step 6: Final answer
    x = 49,766.76

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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.