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Finding the Fourth Proportional to 91,449.87, 126,220.56 and 55,651.42

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Solution

The fourth proportional to 91,449.87, 126,220.56 and 55,651.42 is: 76,810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,449.87 : 126,220.56 = 55,651.42 : x
  2. Step 2: Convert to fraction form
    91,449.87/126,220.56 = 55,651.42/x
  3. Step 3: Cross multiply
    91,449.87x = 126,220.56 × 55,651.42
  4. Step 4: Simplify right side
    91,449.87x = 7,024,352,766.09
  5. Step 5: Solve for x
    x = 7,024,352,766.09/91,449.87
  6. Step 6: Final answer
    x = 76,810.97

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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.