Home / 81,802.55-122,578.58-55,049.36

Finding the Fourth Proportional to 81,802.55, 122,578.58 and 55,049.36

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Solution

The fourth proportional to 81,802.55, 122,578.58 and 55,049.36 is: 82,489.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,802.55 : 122,578.58 = 55,049.36 : x
  2. Step 2: Convert to fraction form
    81,802.55/122,578.58 = 55,049.36/x
  3. Step 3: Cross multiply
    81,802.55x = 122,578.58 × 55,049.36
  4. Step 4: Simplify right side
    81,802.55x = 6,747,872,409.91
  5. Step 5: Solve for x
    x = 6,747,872,409.91/81,802.55
  6. Step 6: Final answer
    x = 82,489.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.