Home / 84,564.80-126,755.64-55,003.76

Finding the Fourth Proportional to 84,564.80, 126,755.64 and 55,003.76

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Solution

The fourth proportional to 84,564.80, 126,755.64 and 55,003.76 is: 82,446.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,564.80 : 126,755.64 = 55,003.76 : x
  2. Step 2: Convert to fraction form
    84,564.80/126,755.64 = 55,003.76/x
  3. Step 3: Cross multiply
    84,564.80x = 126,755.64 × 55,003.76
  4. Step 4: Simplify right side
    84,564.80x = 6,972,036,801.21
  5. Step 5: Solve for x
    x = 6,972,036,801.21/84,564.80
  6. Step 6: Final answer
    x = 82,446.09

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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.