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Finding the Fourth Proportional to 64,940.16, 89,617.44 and 36,651.84

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Solution

The fourth proportional to 64,940.16, 89,617.44 and 36,651.84 is: 50,579.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,940.16 : 89,617.44 = 36,651.84 : x
  2. Step 2: Convert to fraction form
    64,940.16/89,617.44 = 36,651.84/x
  3. Step 3: Cross multiply
    64,940.16x = 89,617.44 × 36,651.84
  4. Step 4: Simplify right side
    64,940.16x = 3,284,644,072.09
  5. Step 5: Solve for x
    x = 3,284,644,072.09/64,940.16
  6. Step 6: Final answer
    x = 50,579.55

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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.