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Finding the Fourth Proportional to 64,343.87, 96,517.20 and 45,290.64

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Solution

The fourth proportional to 64,343.87, 96,517.20 and 45,290.64 is: 67,936.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,343.87 : 96,517.20 = 45,290.64 : x
  2. Step 2: Convert to fraction form
    64,343.87/96,517.20 = 45,290.64/x
  3. Step 3: Cross multiply
    64,343.87x = 96,517.20 × 45,290.64
  4. Step 4: Simplify right side
    64,343.87x = 4,371,325,759.01
  5. Step 5: Solve for x
    x = 4,371,325,759.01/64,343.87
  6. Step 6: Final answer
    x = 67,936.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.