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Finding the Fourth Proportional to 126,606.60, 189,791.10 and 47,773.80

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Solution

The fourth proportional to 126,606.60, 189,791.10 and 47,773.80 is: 71,615.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,606.60 : 189,791.10 = 47,773.80 : x
  2. Step 2: Convert to fraction form
    126,606.60/189,791.10 = 47,773.80/x
  3. Step 3: Cross multiply
    126,606.60x = 189,791.10 × 47,773.80
  4. Step 4: Simplify right side
    126,606.60x = 9,067,042,053.18
  5. Step 5: Solve for x
    x = 9,067,042,053.18/126,606.60
  6. Step 6: Final answer
    x = 71,615.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.