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Finding the Fourth Proportional to 91,169.97, 125,820.87 and 50,891.58

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Solution

The fourth proportional to 91,169.97, 125,820.87 and 50,891.58 is: 70,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,169.97 : 125,820.87 = 50,891.58 : x
  2. Step 2: Convert to fraction form
    91,169.97/125,820.87 = 50,891.58/x
  3. Step 3: Cross multiply
    91,169.97x = 125,820.87 × 50,891.58
  4. Step 4: Simplify right side
    91,169.97x = 6,403,222,871.27
  5. Step 5: Solve for x
    x = 6,403,222,871.27/91,169.97
  6. Step 6: Final answer
    x = 70,233.90

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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.