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Finding the Fourth Proportional to 79,205.31, 109,303.33 and 43,396.68

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Solution

The fourth proportional to 79,205.31, 109,303.33 and 43,396.68 is: 59,887.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,205.31 : 109,303.33 = 43,396.68 : x
  2. Step 2: Convert to fraction form
    79,205.31/109,303.33 = 43,396.68/x
  3. Step 3: Cross multiply
    79,205.31x = 109,303.33 × 43,396.68
  4. Step 4: Simplify right side
    79,205.31x = 4,743,401,634.94
  5. Step 5: Solve for x
    x = 4,743,401,634.94/79,205.31
  6. Step 6: Final answer
    x = 59,887.42

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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.