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Finding the Fourth Proportional to 64,659.78, 89,217.12 and 37,797.09

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Solution

The fourth proportional to 64,659.78, 89,217.12 and 37,797.09 is: 52,152.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,659.78 : 89,217.12 = 37,797.09 : x
  2. Step 2: Convert to fraction form
    64,659.78/89,217.12 = 37,797.09/x
  3. Step 3: Cross multiply
    64,659.78x = 89,217.12 × 37,797.09
  4. Step 4: Simplify right side
    64,659.78x = 3,372,147,514.18
  5. Step 5: Solve for x
    x = 3,372,147,514.18/64,659.78
  6. Step 6: Final answer
    x = 52,152.16

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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.