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Finding the Fourth Proportional to 84,113.73, 125,912.97 and 54,472.59

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Solution

The fourth proportional to 84,113.73, 125,912.97 and 54,472.59 is: 81,542.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,113.73 : 125,912.97 = 54,472.59 : x
  2. Step 2: Convert to fraction form
    84,113.73/125,912.97 = 54,472.59/x
  3. Step 3: Cross multiply
    84,113.73x = 125,912.97 × 54,472.59
  4. Step 4: Simplify right side
    84,113.73x = 6,858,805,590.49
  5. Step 5: Solve for x
    x = 6,858,805,590.49/84,113.73
  6. Step 6: Final answer
    x = 81,542.05

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1.5x scale

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.