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Finding the Fourth Proportional to 64,682.60, 89,255.66 and 36,387.68

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Solution

The fourth proportional to 64,682.60, 89,255.66 and 36,387.68 is: 50,211.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,682.60 : 89,255.66 = 36,387.68 : x
  2. Step 2: Convert to fraction form
    64,682.60/89,255.66 = 36,387.68/x
  3. Step 3: Cross multiply
    64,682.60x = 89,255.66 × 36,387.68
  4. Step 4: Simplify right side
    64,682.60x = 3,247,806,394.27
  5. Step 5: Solve for x
    x = 3,247,806,394.27/64,682.60
  6. Step 6: Final answer
    x = 50,211.44

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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.