Home / 81,930.86-113,118.96-51,349.92

Finding the Fourth Proportional to 81,930.86, 113,118.96 and 51,349.92

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Solution

The fourth proportional to 81,930.86, 113,118.96 and 51,349.92 is: 70,896.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,930.86 : 113,118.96 = 51,349.92 : x
  2. Step 2: Convert to fraction form
    81,930.86/113,118.96 = 51,349.92/x
  3. Step 3: Cross multiply
    81,930.86x = 113,118.96 × 51,349.92
  4. Step 4: Simplify right side
    81,930.86x = 5,808,649,546.48
  5. Step 5: Solve for x
    x = 5,808,649,546.48/81,930.86
  6. Step 6: Final answer
    x = 70,896.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.