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Finding the Fourth Proportional to 44,491.52, 66,729.60 and 13,318.40

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Solution

The fourth proportional to 44,491.52, 66,729.60 and 13,318.40 is: 19,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,491.52 : 66,729.60 = 13,318.40 : x
  2. Step 2: Convert to fraction form
    44,491.52/66,729.60 = 13,318.40/x
  3. Step 3: Cross multiply
    44,491.52x = 66,729.60 × 13,318.40
  4. Step 4: Simplify right side
    44,491.52x = 888,731,504.64
  5. Step 5: Solve for x
    x = 888,731,504.64/44,491.52
  6. Step 6: Final answer
    x = 19,975.30

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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.