Home / 81,102.36-111,761.78-62,003.70

Finding the Fourth Proportional to 81,102.36, 111,761.78 and 62,003.70

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Solution

The fourth proportional to 81,102.36, 111,761.78 and 62,003.70 is: 85,443.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,102.36 : 111,761.78 = 62,003.70 : x
  2. Step 2: Convert to fraction form
    81,102.36/111,761.78 = 62,003.70/x
  3. Step 3: Cross multiply
    81,102.36x = 111,761.78 × 62,003.70
  4. Step 4: Simplify right side
    81,102.36x = 6,929,643,878.59
  5. Step 5: Solve for x
    x = 6,929,643,878.59/81,102.36
  6. Step 6: Final answer
    x = 85,443.18

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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.