Home / 81,040.62-111,702.20-54,173.33

Finding the Fourth Proportional to 81,040.62, 111,702.20 and 54,173.33

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Solution

The fourth proportional to 81,040.62, 111,702.20 and 54,173.33 is: 74,669.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,040.62 : 111,702.20 = 54,173.33 : x
  2. Step 2: Convert to fraction form
    81,040.62/111,702.20 = 54,173.33/x
  3. Step 3: Cross multiply
    81,040.62x = 111,702.20 × 54,173.33
  4. Step 4: Simplify right side
    81,040.62x = 6,051,279,312.95
  5. Step 5: Solve for x
    x = 6,051,279,312.95/81,040.62
  6. Step 6: Final answer
    x = 74,669.71

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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.