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Finding the Fourth Proportional to 43,969,720.80, 65,978,200.80 and 18,413,313.60

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Solution

The fourth proportional to 43,969,720.80, 65,978,200.80 and 18,413,313.60 is: 27,629,861.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,969,720.80 : 65,978,200.80 = 18,413,313.60 : x
  2. Step 2: Convert to fraction form
    43,969,720.80/65,978,200.80 = 18,413,313.60/x
  3. Step 3: Cross multiply
    43,969,720.80x = 65,978,200.80 × 18,413,313.60
  4. Step 4: Simplify right side
    43,969,720.80x = 1,214,877,302,094,171
  5. Step 5: Solve for x
    x = 1,214,877,302,094,171/43,969,720.80
  6. Step 6: Final answer
    x = 27,629,861.64

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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.