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Finding the Fourth Proportional to 79,704.87, 109,988.31 and 43,887.87

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Solution

The fourth proportional to 79,704.87, 109,988.31 and 43,887.87 is: 60,562.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,704.87 : 109,988.31 = 43,887.87 : x
  2. Step 2: Convert to fraction form
    79,704.87/109,988.31 = 43,887.87/x
  3. Step 3: Cross multiply
    79,704.87x = 109,988.31 × 43,887.87
  4. Step 4: Simplify right side
    79,704.87x = 4,827,152,650.80
  5. Step 5: Solve for x
    x = 4,827,152,650.80/79,704.87
  6. Step 6: Final answer
    x = 60,562.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.