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Finding the Fourth Proportional to 79,195.70, 109,292.02 and 43,385.80

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Solution

The fourth proportional to 79,195.70, 109,292.02 and 43,385.80 is: 59,873.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,195.70 : 109,292.02 = 43,385.80 : x
  2. Step 2: Convert to fraction form
    79,195.70/109,292.02 = 43,385.80/x
  3. Step 3: Cross multiply
    79,195.70x = 109,292.02 × 43,385.80
  4. Step 4: Simplify right side
    79,195.70x = 4,741,721,721.32
  5. Step 5: Solve for x
    x = 4,741,721,721.32/79,195.70
  6. Step 6: Final answer
    x = 59,873.47

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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.