Home / 81,513.74-122,262.42-22,355.36

Finding the Fourth Proportional to 81,513.74, 122,262.42 and 22,355.36

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Solution

The fourth proportional to 81,513.74, 122,262.42 and 22,355.36 is: 33,530.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,513.74 : 122,262.42 = 22,355.36 : x
  2. Step 2: Convert to fraction form
    81,513.74/122,262.42 = 22,355.36/x
  3. Step 3: Cross multiply
    81,513.74x = 122,262.42 × 22,355.36
  4. Step 4: Simplify right side
    81,513.74x = 2,733,220,413.57
  5. Step 5: Solve for x
    x = 2,733,220,413.57/81,513.74
  6. Step 6: Final answer
    x = 33,530.79

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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.