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Finding the Fourth Proportional to 64,905.76, 89,559.76 and 36,610.88

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Solution

The fourth proportional to 64,905.76, 89,559.76 and 36,610.88 is: 50,517.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,905.76 : 89,559.76 = 36,610.88 : x
  2. Step 2: Convert to fraction form
    64,905.76/89,559.76 = 36,610.88/x
  3. Step 3: Cross multiply
    64,905.76x = 89,559.76 × 36,610.88
  4. Step 4: Simplify right side
    64,905.76x = 3,278,861,626.19
  5. Step 5: Solve for x
    x = 3,278,861,626.19/64,905.76
  6. Step 6: Final answer
    x = 50,517.27

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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.