Home / 79,515.26-109,665.32-53,979.64

Finding the Fourth Proportional to 79,515.26, 109,665.32 and 53,979.64

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Solution

The fourth proportional to 79,515.26, 109,665.32 and 53,979.64 is: 74,447.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,515.26 : 109,665.32 = 53,979.64 : x
  2. Step 2: Convert to fraction form
    79,515.26/109,665.32 = 53,979.64/x
  3. Step 3: Cross multiply
    79,515.26x = 109,665.32 × 53,979.64
  4. Step 4: Simplify right side
    79,515.26x = 5,919,694,494.08
  5. Step 5: Solve for x
    x = 5,919,694,494.08/79,515.26
  6. Step 6: Final answer
    x = 74,447.28

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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.