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Finding the Fourth Proportional to 73,286.88, 109,913.76 and 43,713.12

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Solution

The fourth proportional to 73,286.88, 109,913.76 and 43,713.12 is: 65,559.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,286.88 : 109,913.76 = 43,713.12 : x
  2. Step 2: Convert to fraction form
    73,286.88/109,913.76 = 43,713.12/x
  3. Step 3: Cross multiply
    73,286.88x = 109,913.76 × 43,713.12
  4. Step 4: Simplify right side
    73,286.88x = 4,804,673,380.53
  5. Step 5: Solve for x
    x = 4,804,673,380.53/73,286.88
  6. Step 6: Final answer
    x = 65,559.80

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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.