Home / 90,910.28-125,456.16-53,191.82

Finding the Fourth Proportional to 90,910.28, 125,456.16 and 53,191.82

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Solution

The fourth proportional to 90,910.28, 125,456.16 and 53,191.82 is: 73,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,910.28 : 125,456.16 = 53,191.82 : x
  2. Step 2: Convert to fraction form
    90,910.28/125,456.16 = 53,191.82/x
  3. Step 3: Cross multiply
    90,910.28x = 125,456.16 × 53,191.82
  4. Step 4: Simplify right side
    90,910.28x = 6,673,241,480.61
  5. Step 5: Solve for x
    x = 6,673,241,480.61/90,910.28
  6. Step 6: Final answer
    x = 73,404.70

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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.