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Finding the Fourth Proportional to 64,487.28, 88,992.36 and 36,195.60

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Solution

The fourth proportional to 64,487.28, 88,992.36 and 36,195.60 is: 49,949.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,487.28 : 88,992.36 = 36,195.60 : x
  2. Step 2: Convert to fraction form
    64,487.28/88,992.36 = 36,195.60/x
  3. Step 3: Cross multiply
    64,487.28x = 88,992.36 × 36,195.60
  4. Step 4: Simplify right side
    64,487.28x = 3,221,131,865.62
  5. Step 5: Solve for x
    x = 3,221,131,865.62/64,487.28
  6. Step 6: Final answer
    x = 49,949.88

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1.5x scale

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.