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Finding the Fourth Proportional to 91,129.92, 125,758.90 and 50,843.71

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Solution

The fourth proportional to 91,129.92, 125,758.90 and 50,843.71 is: 70,164.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,129.92 : 125,758.90 = 50,843.71 : x
  2. Step 2: Convert to fraction form
    91,129.92/125,758.90 = 50,843.71/x
  3. Step 3: Cross multiply
    91,129.92x = 125,758.90 × 50,843.71
  4. Step 4: Simplify right side
    91,129.92x = 6,394,049,041.52
  5. Step 5: Solve for x
    x = 6,394,049,041.52/91,129.92
  6. Step 6: Final answer
    x = 70,164.10

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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.