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Finding the Fourth Proportional to 36,887.91, 50,905.31 and 20,120.91

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Solution

The fourth proportional to 36,887.91, 50,905.31 and 20,120.91 is: 27,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,887.91 : 50,905.31 = 20,120.91 : x
  2. Step 2: Convert to fraction form
    36,887.91/50,905.31 = 20,120.91/x
  3. Step 3: Cross multiply
    36,887.91x = 50,905.31 × 20,120.91
  4. Step 4: Simplify right side
    36,887.91x = 1,024,260,982.71
  5. Step 5: Solve for x
    x = 1,024,260,982.71/36,887.91
  6. Step 6: Final answer
    x = 27,766.85

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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.