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Finding the Fourth Proportional to 91,791.99, 126,671.76 and 51,506.55

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Solution

The fourth proportional to 91,791.99, 126,671.76 and 51,506.55 is: 71,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,791.99 : 126,671.76 = 51,506.55 : x
  2. Step 2: Convert to fraction form
    91,791.99/126,671.76 = 51,506.55/x
  3. Step 3: Cross multiply
    91,791.99x = 126,671.76 × 51,506.55
  4. Step 4: Simplify right side
    91,791.99x = 6,524,425,340.03
  5. Step 5: Solve for x
    x = 6,524,425,340.03/91,791.99
  6. Step 6: Final answer
    x = 71,078.37

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1.5x scale

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.