Home / 80,579.87-111,164.45-53,696.19

Finding the Fourth Proportional to 80,579.87, 111,164.45 and 53,696.19

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Solution

The fourth proportional to 80,579.87, 111,164.45 and 53,696.19 is: 74,076.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,579.87 : 111,164.45 = 53,696.19 : x
  2. Step 2: Convert to fraction form
    80,579.87/111,164.45 = 53,696.19/x
  3. Step 3: Cross multiply
    80,579.87x = 111,164.45 × 53,696.19
  4. Step 4: Simplify right side
    80,579.87x = 5,969,107,159.96
  5. Step 5: Solve for x
    x = 5,969,107,159.96/80,579.87
  6. Step 6: Final answer
    x = 74,076.91

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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.