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Finding the Fourth Proportional to 79,323.21, 109,471.05 and 52,418.52

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Solution

The fourth proportional to 79,323.21, 109,471.05 and 52,418.52 is: 72,340.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,323.21 : 109,471.05 = 52,418.52 : x
  2. Step 2: Convert to fraction form
    79,323.21/109,471.05 = 52,418.52/x
  3. Step 3: Cross multiply
    79,323.21x = 109,471.05 × 52,418.52
  4. Step 4: Simplify right side
    79,323.21x = 5,738,310,423.85
  5. Step 5: Solve for x
    x = 5,738,310,423.85/79,323.21
  6. Step 6: Final answer
    x = 72,340.88

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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.