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Finding the Fourth Proportional to 64,960.14, 89,606 and 39,453.54

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Solution

The fourth proportional to 64,960.14, 89,606 and 39,453.54 is: 54,422.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,960.14 : 89,606 = 39,453.54 : x
  2. Step 2: Convert to fraction form
    64,960.14/89,606 = 39,453.54/x
  3. Step 3: Cross multiply
    64,960.14x = 89,606 × 39,453.54
  4. Step 4: Simplify right side
    64,960.14x = 3,535,273,905.24
  5. Step 5: Solve for x
    x = 3,535,273,905.24/64,960.14
  6. Step 6: Final answer
    x = 54,422.20

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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.