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Finding the Fourth Proportional to 64,630.92, 89,198.64 and 36,336

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Solution

The fourth proportional to 64,630.92, 89,198.64 and 36,336 is: 50,148.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,630.92 : 89,198.64 = 36,336 : x
  2. Step 2: Convert to fraction form
    64,630.92/89,198.64 = 36,336/x
  3. Step 3: Cross multiply
    64,630.92x = 89,198.64 × 36,336
  4. Step 4: Simplify right side
    64,630.92x = 3,241,121,783.04
  5. Step 5: Solve for x
    x = 3,241,121,783.04/64,630.92
  6. Step 6: Final answer
    x = 50,148.16

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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.