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Finding the Fourth Proportional to 81,888.74, 122,578.86 and 44,355.60

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Solution

The fourth proportional to 81,888.74, 122,578.86 and 44,355.60 is: 66,395.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,888.74 : 122,578.86 = 44,355.60 : x
  2. Step 2: Convert to fraction form
    81,888.74/122,578.86 = 44,355.60/x
  3. Step 3: Cross multiply
    81,888.74x = 122,578.86 × 44,355.60
  4. Step 4: Simplify right side
    81,888.74x = 5,437,058,882.62
  5. Step 5: Solve for x
    x = 5,437,058,882.62/81,888.74
  6. Step 6: Final answer
    x = 66,395.68

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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.