Home / 87,020.78-130,550.31-27,862.43

Finding the Fourth Proportional to 87,020.78, 130,550.31 and 27,862.43

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Solution

The fourth proportional to 87,020.78, 130,550.31 and 27,862.43 is: 41,799.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,020.78 : 130,550.31 = 27,862.43 : x
  2. Step 2: Convert to fraction form
    87,020.78/130,550.31 = 27,862.43/x
  3. Step 3: Cross multiply
    87,020.78x = 130,550.31 × 27,862.43
  4. Step 4: Simplify right side
    87,020.78x = 3,637,449,200.23
  5. Step 5: Solve for x
    x = 3,637,449,200.23/87,020.78
  6. Step 6: Final answer
    x = 41,799.78

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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.