Home / 81,213.81-121,828.07-25,054.75

Finding the Fourth Proportional to 81,213.81, 121,828.07 and 25,054.75

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Solution

The fourth proportional to 81,213.81, 121,828.07 and 25,054.75 is: 37,584.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,213.81 : 121,828.07 = 25,054.75 : x
  2. Step 2: Convert to fraction form
    81,213.81/121,828.07 = 25,054.75/x
  3. Step 3: Cross multiply
    81,213.81x = 121,828.07 × 25,054.75
  4. Step 4: Simplify right side
    81,213.81x = 3,052,371,836.83
  5. Step 5: Solve for x
    x = 3,052,371,836.83/81,213.81
  6. Step 6: Final answer
    x = 37,584.39

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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.