Home / 80,576.87-111,160.31-53,693.19

Finding the Fourth Proportional to 80,576.87, 111,160.31 and 53,693.19

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Solution

The fourth proportional to 80,576.87, 111,160.31 and 53,693.19 is: 74,072.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,576.87 : 111,160.31 = 53,693.19 : x
  2. Step 2: Convert to fraction form
    80,576.87/111,160.31 = 53,693.19/x
  3. Step 3: Cross multiply
    80,576.87x = 111,160.31 × 53,693.19
  4. Step 4: Simplify right side
    80,576.87x = 5,968,551,376.82
  5. Step 5: Solve for x
    x = 5,968,551,376.82/80,576.87
  6. Step 6: Final answer
    x = 74,072.77

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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.