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Finding the Fourth Proportional to 79,135.66, 109,207.32 and 43,325.92

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Solution

The fourth proportional to 79,135.66, 109,207.32 and 43,325.92 is: 59,789.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,135.66 : 109,207.32 = 43,325.92 : x
  2. Step 2: Convert to fraction form
    79,135.66/109,207.32 = 43,325.92/x
  3. Step 3: Cross multiply
    79,135.66x = 109,207.32 × 43,325.92
  4. Step 4: Simplify right side
    79,135.66x = 4,731,507,609.73
  5. Step 5: Solve for x
    x = 4,731,507,609.73/79,135.66
  6. Step 6: Final answer
    x = 59,789.83

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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.