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Finding the Fourth Proportional to 79,202.81, 109,299.88 and 43,394.18

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Solution

The fourth proportional to 79,202.81, 109,299.88 and 43,394.18 is: 59,883.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,202.81 : 109,299.88 = 43,394.18 : x
  2. Step 2: Convert to fraction form
    79,202.81/109,299.88 = 43,394.18/x
  3. Step 3: Cross multiply
    79,202.81x = 109,299.88 × 43,394.18
  4. Step 4: Simplify right side
    79,202.81x = 4,742,978,789.25
  5. Step 5: Solve for x
    x = 4,742,978,789.25/79,202.81
  6. Step 6: Final answer
    x = 59,883.97

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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.