Home / 81,297.87-121,958.55-25,142.61

Finding the Fourth Proportional to 81,297.87, 121,958.55 and 25,142.61

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Solution

The fourth proportional to 81,297.87, 121,958.55 and 25,142.61 is: 37,717.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,297.87 : 121,958.55 = 25,142.61 : x
  2. Step 2: Convert to fraction form
    81,297.87/121,958.55 = 25,142.61/x
  3. Step 3: Cross multiply
    81,297.87x = 121,958.55 × 25,142.61
  4. Step 4: Simplify right side
    81,297.87x = 3,066,356,258.82
  5. Step 5: Solve for x
    x = 3,066,356,258.82/81,297.87
  6. Step 6: Final answer
    x = 37,717.55

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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.