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Finding the Fourth Proportional to 67,645.44, 101,480.92 and 20,887.40

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Solution

The fourth proportional to 67,645.44, 101,480.92 and 20,887.40 is: 31,335.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,645.44 : 101,480.92 = 20,887.40 : x
  2. Step 2: Convert to fraction form
    67,645.44/101,480.92 = 20,887.40/x
  3. Step 3: Cross multiply
    67,645.44x = 101,480.92 × 20,887.40
  4. Step 4: Simplify right side
    67,645.44x = 2,119,672,568.41
  5. Step 5: Solve for x
    x = 2,119,672,568.41/67,645.44
  6. Step 6: Final answer
    x = 31,335.04

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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.