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Finding the Fourth Proportional to 79,194.60, 109,290.87 and 43,386.66

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Solution

The fourth proportional to 79,194.60, 109,290.87 and 43,386.66 is: 59,874.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,194.60 : 109,290.87 = 43,386.66 : x
  2. Step 2: Convert to fraction form
    79,194.60/109,290.87 = 43,386.66/x
  3. Step 3: Cross multiply
    79,194.60x = 109,290.87 × 43,386.66
  4. Step 4: Simplify right side
    79,194.60x = 4,741,765,817.79
  5. Step 5: Solve for x
    x = 4,741,765,817.79/79,194.60
  6. Step 6: Final answer
    x = 59,874.86

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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.