Home / 81,313.96-121,982.56-25,158.86

Finding the Fourth Proportional to 81,313.96, 121,982.56 and 25,158.86

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Solution

The fourth proportional to 81,313.96, 121,982.56 and 25,158.86 is: 37,741.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,313.96 : 121,982.56 = 25,158.86 : x
  2. Step 2: Convert to fraction form
    81,313.96/121,982.56 = 25,158.86/x
  3. Step 3: Cross multiply
    81,313.96x = 121,982.56 × 25,158.86
  4. Step 4: Simplify right side
    81,313.96x = 3,068,942,391.54
  5. Step 5: Solve for x
    x = 3,068,942,391.54/81,313.96
  6. Step 6: Final answer
    x = 37,741.89

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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.