Home / 76,918.46-115,372.22-20,761.77

Finding the Fourth Proportional to 76,918.46, 115,372.22 and 20,761.77

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Solution

The fourth proportional to 76,918.46, 115,372.22 and 20,761.77 is: 31,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,918.46 : 115,372.22 = 20,761.77 : x
  2. Step 2: Convert to fraction form
    76,918.46/115,372.22 = 20,761.77/x
  3. Step 3: Cross multiply
    76,918.46x = 115,372.22 × 20,761.77
  4. Step 4: Simplify right side
    76,918.46x = 2,395,331,392.22
  5. Step 5: Solve for x
    x = 2,395,331,392.22/76,918.46
  6. Step 6: Final answer
    x = 31,141.18

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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.