Home / 76,991.51-115,498.20-23,687.91

Finding the Fourth Proportional to 76,991.51, 115,498.20 and 23,687.91

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Solution

The fourth proportional to 76,991.51, 115,498.20 and 23,687.91 is: 35,535.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,991.51 : 115,498.20 = 23,687.91 : x
  2. Step 2: Convert to fraction form
    76,991.51/115,498.20 = 23,687.91/x
  3. Step 3: Cross multiply
    76,991.51x = 115,498.20 × 23,687.91
  4. Step 4: Simplify right side
    76,991.51x = 2,735,910,568.33
  5. Step 5: Solve for x
    x = 2,735,910,568.33/76,991.51
  6. Step 6: Final answer
    x = 35,535.22

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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.