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Finding the Fourth Proportional to 36,076.86, 54,078.84 and 20,461.68

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Solution

The fourth proportional to 36,076.86, 54,078.84 and 20,461.68 is: 30,671.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,076.86 : 54,078.84 = 20,461.68 : x
  2. Step 2: Convert to fraction form
    36,076.86/54,078.84 = 20,461.68/x
  3. Step 3: Cross multiply
    36,076.86x = 54,078.84 × 20,461.68
  4. Step 4: Simplify right side
    36,076.86x = 1,106,543,918.85
  5. Step 5: Solve for x
    x = 1,106,543,918.85/36,076.86
  6. Step 6: Final answer
    x = 30,671.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.