Home / 84,091.16-126,137.21-21,761.66

Finding the Fourth Proportional to 84,091.16, 126,137.21 and 21,761.66

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Solution

The fourth proportional to 84,091.16, 126,137.21 and 21,761.66 is: 32,642.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,091.16 : 126,137.21 = 21,761.66 : x
  2. Step 2: Convert to fraction form
    84,091.16/126,137.21 = 21,761.66/x
  3. Step 3: Cross multiply
    84,091.16x = 126,137.21 × 21,761.66
  4. Step 4: Simplify right side
    84,091.16x = 2,744,955,283.90
  5. Step 5: Solve for x
    x = 2,744,955,283.90/84,091.16
  6. Step 6: Final answer
    x = 32,642.61

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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.