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Finding the Fourth Proportional to 91,279.92, 125,966.32 and 50,993.60

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Solution

The fourth proportional to 91,279.92, 125,966.32 and 50,993.60 is: 70,371.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,279.92 : 125,966.32 = 50,993.60 : x
  2. Step 2: Convert to fraction form
    91,279.92/125,966.32 = 50,993.60/x
  3. Step 3: Cross multiply
    91,279.92x = 125,966.32 × 50,993.60
  4. Step 4: Simplify right side
    91,279.92x = 6,423,476,135.55
  5. Step 5: Solve for x
    x = 6,423,476,135.55/91,279.92
  6. Step 6: Final answer
    x = 70,371.18

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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.