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Finding the Fourth Proportional to 43,661.63, 65,486.07 and 21,469.05

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Solution

The fourth proportional to 43,661.63, 65,486.07 and 21,469.05 is: 32,200.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,661.63 : 65,486.07 = 21,469.05 : x
  2. Step 2: Convert to fraction form
    43,661.63/65,486.07 = 21,469.05/x
  3. Step 3: Cross multiply
    43,661.63x = 65,486.07 × 21,469.05
  4. Step 4: Simplify right side
    43,661.63x = 1,405,923,711.13
  5. Step 5: Solve for x
    x = 1,405,923,711.13/43,661.63
  6. Step 6: Final answer
    x = 32,200.44

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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.