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Finding the Fourth Proportional to 43,866.88, 65,810.06 and 20,480.56

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Solution

The fourth proportional to 43,866.88, 65,810.06 and 20,480.56 is: 30,725.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,866.88 : 65,810.06 = 20,480.56 : x
  2. Step 2: Convert to fraction form
    43,866.88/65,810.06 = 20,480.56/x
  3. Step 3: Cross multiply
    43,866.88x = 65,810.06 × 20,480.56
  4. Step 4: Simplify right side
    43,866.88x = 1,347,826,882.43
  5. Step 5: Solve for x
    x = 1,347,826,882.43/43,866.88
  6. Step 6: Final answer
    x = 30,725.39

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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.