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Finding the Fourth Proportional to 36,279.64, 50,076.35 and 21,939.50

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Solution

The fourth proportional to 36,279.64, 50,076.35 and 21,939.50 is: 30,282.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,279.64 : 50,076.35 = 21,939.50 : x
  2. Step 2: Convert to fraction form
    36,279.64/50,076.35 = 21,939.50/x
  3. Step 3: Cross multiply
    36,279.64x = 50,076.35 × 21,939.50
  4. Step 4: Simplify right side
    36,279.64x = 1,098,650,080.83
  5. Step 5: Solve for x
    x = 1,098,650,080.83/36,279.64
  6. Step 6: Final answer
    x = 30,282.83

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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.