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Finding the Fourth Proportional to 32,485, 48,729.94 and 18,439.60

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Solution

The fourth proportional to 32,485, 48,729.94 and 18,439.60 is: 27,660.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,485 : 48,729.94 = 18,439.60 : x
  2. Step 2: Convert to fraction form
    32,485/48,729.94 = 18,439.60/x
  3. Step 3: Cross multiply
    32,485x = 48,729.94 × 18,439.60
  4. Step 4: Simplify right side
    32,485x = 898,560,601.62
  5. Step 5: Solve for x
    x = 898,560,601.62/32,485
  6. Step 6: Final answer
    x = 27,660.79

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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.