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Finding the Fourth Proportional to 79,137.47, 109,209.66 and 43,327.47

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Solution

The fourth proportional to 79,137.47, 109,209.66 and 43,327.47 is: 59,791.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,137.47 : 109,209.66 = 43,327.47 : x
  2. Step 2: Convert to fraction form
    79,137.47/109,209.66 = 43,327.47/x
  3. Step 3: Cross multiply
    79,137.47x = 109,209.66 × 43,327.47
  4. Step 4: Simplify right side
    79,137.47x = 4,731,778,267.36
  5. Step 5: Solve for x
    x = 4,731,778,267.36/79,137.47
  6. Step 6: Final answer
    x = 59,791.88

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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.