Home / 81,057.72-111,910.98-55,606.68

Finding the Fourth Proportional to 81,057.72, 111,910.98 and 55,606.68

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Solution

The fourth proportional to 81,057.72, 111,910.98 and 55,606.68 is: 76,772.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,057.72 : 111,910.98 = 55,606.68 : x
  2. Step 2: Convert to fraction form
    81,057.72/111,910.98 = 55,606.68/x
  3. Step 3: Cross multiply
    81,057.72x = 111,910.98 × 55,606.68
  4. Step 4: Simplify right side
    81,057.72x = 6,222,998,053.35
  5. Step 5: Solve for x
    x = 6,222,998,053.35/81,057.72
  6. Step 6: Final answer
    x = 76,772.43

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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.