Home / 81,219.92-121,842-25,055.36

Finding the Fourth Proportional to 81,219.92, 121,842 and 25,055.36

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Solution

The fourth proportional to 81,219.92, 121,842 and 25,055.36 is: 37,586.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,219.92 : 121,842 = 25,055.36 : x
  2. Step 2: Convert to fraction form
    81,219.92/121,842 = 25,055.36/x
  3. Step 3: Cross multiply
    81,219.92x = 121,842 × 25,055.36
  4. Step 4: Simplify right side
    81,219.92x = 3,052,795,173.12
  5. Step 5: Solve for x
    x = 3,052,795,173.12/81,219.92
  6. Step 6: Final answer
    x = 37,586.78

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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.