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Finding the Fourth Proportional to 79,084.56, 109,138.44 and 43,274.55

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Solution

The fourth proportional to 79,084.56, 109,138.44 and 43,274.55 is: 59,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,084.56 : 109,138.44 = 43,274.55 : x
  2. Step 2: Convert to fraction form
    79,084.56/109,138.44 = 43,274.55/x
  3. Step 3: Cross multiply
    79,084.56x = 109,138.44 × 43,274.55
  4. Step 4: Simplify right side
    79,084.56x = 4,722,916,878.70
  5. Step 5: Solve for x
    x = 4,722,916,878.70/79,084.56
  6. Step 6: Final answer
    x = 59,719.84

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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.