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Finding the Fourth Proportional to 78,757.44, 118,101.60 and 28,824.60

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Solution

The fourth proportional to 78,757.44, 118,101.60 and 28,824.60 is: 43,224.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,757.44 : 118,101.60 = 28,824.60 : x
  2. Step 2: Convert to fraction form
    78,757.44/118,101.60 = 28,824.60/x
  3. Step 3: Cross multiply
    78,757.44x = 118,101.60 × 28,824.60
  4. Step 4: Simplify right side
    78,757.44x = 3,404,231,379.36
  5. Step 5: Solve for x
    x = 3,404,231,379.36/78,757.44
  6. Step 6: Final answer
    x = 43,224.25

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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.