Home / 81,413.74-122,138.14-25,252.72

Finding the Fourth Proportional to 81,413.74, 122,138.14 and 25,252.72

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Solution

The fourth proportional to 81,413.74, 122,138.14 and 25,252.72 is: 37,884.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,413.74 : 122,138.14 = 25,252.72 : x
  2. Step 2: Convert to fraction form
    81,413.74/122,138.14 = 25,252.72/x
  3. Step 3: Cross multiply
    81,413.74x = 122,138.14 × 25,252.72
  4. Step 4: Simplify right side
    81,413.74x = 3,084,320,250.74
  5. Step 5: Solve for x
    x = 3,084,320,250.74/81,413.74
  6. Step 6: Final answer
    x = 37,884.52

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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.