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Finding the Fourth Proportional to 66,279.25, 91,465.37 and 36,471.25

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Solution

The fourth proportional to 66,279.25, 91,465.37 and 36,471.25 is: 50,330.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,279.25 : 91,465.37 = 36,471.25 : x
  2. Step 2: Convert to fraction form
    66,279.25/91,465.37 = 36,471.25/x
  3. Step 3: Cross multiply
    66,279.25x = 91,465.37 × 36,471.25
  4. Step 4: Simplify right side
    66,279.25x = 3,335,856,375.61
  5. Step 5: Solve for x
    x = 3,335,856,375.61/66,279.25
  6. Step 6: Final answer
    x = 50,330.33

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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.