Home / 76,761.38-115,129.52-54,507.44

Finding the Fourth Proportional to 76,761.38, 115,129.52 and 54,507.44

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Solution

The fourth proportional to 76,761.38, 115,129.52 and 54,507.44 is: 81,752.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,761.38 : 115,129.52 = 54,507.44 : x
  2. Step 2: Convert to fraction form
    76,761.38/115,129.52 = 54,507.44/x
  3. Step 3: Cross multiply
    76,761.38x = 115,129.52 × 54,507.44
  4. Step 4: Simplify right side
    76,761.38x = 6,275,415,403.63
  5. Step 5: Solve for x
    x = 6,275,415,403.63/76,761.38
  6. Step 6: Final answer
    x = 81,752.25

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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.