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Finding the Fourth Proportional to 79,249.40, 109,366.84 and 43,439.40

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Solution

The fourth proportional to 79,249.40, 109,366.84 and 43,439.40 is: 59,947.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,249.40 : 109,366.84 = 43,439.40 : x
  2. Step 2: Convert to fraction form
    79,249.40/109,366.84 = 43,439.40/x
  3. Step 3: Cross multiply
    79,249.40x = 109,366.84 × 43,439.40
  4. Step 4: Simplify right side
    79,249.40x = 4,750,829,963.80
  5. Step 5: Solve for x
    x = 4,750,829,963.80/79,249.40
  6. Step 6: Final answer
    x = 59,947.84

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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.