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Finding the Fourth Proportional to 43,865,906.40, 65,798,859.60 and 11,515,672.80

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Solution

The fourth proportional to 43,865,906.40, 65,798,859.60 and 11,515,672.80 is: 17,273,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,865,906.40 : 65,798,859.60 = 11,515,672.80 : x
  2. Step 2: Convert to fraction form
    43,865,906.40/65,798,859.60 = 11,515,672.80/x
  3. Step 3: Cross multiply
    43,865,906.40x = 65,798,859.60 × 11,515,672.80
  4. Step 4: Simplify right side
    43,865,906.40x = 757,718,137,766,739
  5. Step 5: Solve for x
    x = 757,718,137,766,739/43,865,906.40
  6. Step 6: Final answer
    x = 17,273,509.20

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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.