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Finding the Fourth Proportional to 79,310.53, 109,451.60 and 43,502.05

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Solution

The fourth proportional to 79,310.53, 109,451.60 and 43,502.05 is: 60,034.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,310.53 : 109,451.60 = 43,502.05 : x
  2. Step 2: Convert to fraction form
    79,310.53/109,451.60 = 43,502.05/x
  3. Step 3: Cross multiply
    79,310.53x = 109,451.60 × 43,502.05
  4. Step 4: Simplify right side
    79,310.53x = 4,761,368,975.78
  5. Step 5: Solve for x
    x = 4,761,368,975.78/79,310.53
  6. Step 6: Final answer
    x = 60,034.51

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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.