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Finding the Fourth Proportional to 79,219, 109,322.22 and 43,891

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Solution

The fourth proportional to 79,219, 109,322.22 and 43,891 is: 60,569.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,219 : 109,322.22 = 43,891 : x
  2. Step 2: Convert to fraction form
    79,219/109,322.22 = 43,891/x
  3. Step 3: Cross multiply
    79,219x = 109,322.22 × 43,891
  4. Step 4: Simplify right side
    79,219x = 4,798,261,558.02
  5. Step 5: Solve for x
    x = 4,798,261,558.02/79,219
  6. Step 6: Final answer
    x = 60,569.58

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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.