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Finding the Fourth Proportional to 78,797.42, 118,218 and 43,761.68

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Solution

The fourth proportional to 78,797.42, 118,218 and 43,761.68 is: 65,654.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,797.42 : 118,218 = 43,761.68 : x
  2. Step 2: Convert to fraction form
    78,797.42/118,218 = 43,761.68/x
  3. Step 3: Cross multiply
    78,797.42x = 118,218 × 43,761.68
  4. Step 4: Simplify right side
    78,797.42x = 5,173,418,286.24
  5. Step 5: Solve for x
    x = 5,173,418,286.24/78,797.42
  6. Step 6: Final answer
    x = 65,654.67

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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.