Home / 87,974.51-131,969.05-28,808.87

Finding the Fourth Proportional to 87,974.51, 131,969.05 and 28,808.87

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Solution

The fourth proportional to 87,974.51, 131,969.05 and 28,808.87 is: 43,215.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,974.51 : 131,969.05 = 28,808.87 : x
  2. Step 2: Convert to fraction form
    87,974.51/131,969.05 = 28,808.87/x
  3. Step 3: Cross multiply
    87,974.51x = 131,969.05 × 28,808.87
  4. Step 4: Simplify right side
    87,974.51x = 3,801,878,473.61
  5. Step 5: Solve for x
    x = 3,801,878,473.61/87,974.51
  6. Step 6: Final answer
    x = 43,215.68

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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.