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Finding the Fourth Proportional to 79,143.96, 109,218.64 and 43,333.96

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Solution

The fourth proportional to 79,143.96, 109,218.64 and 43,333.96 is: 59,800.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,143.96 : 109,218.64 = 43,333.96 : x
  2. Step 2: Convert to fraction form
    79,143.96/109,218.64 = 43,333.96/x
  3. Step 3: Cross multiply
    79,143.96x = 109,218.64 × 43,333.96
  4. Step 4: Simplify right side
    79,143.96x = 4,732,876,177.01
  5. Step 5: Solve for x
    x = 4,732,876,177.01/79,143.96
  6. Step 6: Final answer
    x = 59,800.85

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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.