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Finding the Fourth Proportional to 79,438.50, 109,625.88 and 43,629.25

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Solution

The fourth proportional to 79,438.50, 109,625.88 and 43,629.25 is: 60,208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,438.50 : 109,625.88 = 43,629.25 : x
  2. Step 2: Convert to fraction form
    79,438.50/109,625.88 = 43,629.25/x
  3. Step 3: Cross multiply
    79,438.50x = 109,625.88 × 43,629.25
  4. Step 4: Simplify right side
    79,438.50x = 4,782,894,924.99
  5. Step 5: Solve for x
    x = 4,782,894,924.99/79,438.50
  6. Step 6: Final answer
    x = 60,208.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.