Home / 86,587.10-129,879.75-27,422.76

Finding the Fourth Proportional to 86,587.10, 129,879.75 and 27,422.76

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Solution

The fourth proportional to 86,587.10, 129,879.75 and 27,422.76 is: 41,133.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,587.10 : 129,879.75 = 27,422.76 : x
  2. Step 2: Convert to fraction form
    86,587.10/129,879.75 = 27,422.76/x
  3. Step 3: Cross multiply
    86,587.10x = 129,879.75 × 27,422.76
  4. Step 4: Simplify right side
    86,587.10x = 3,561,661,734.44
  5. Step 5: Solve for x
    x = 3,561,661,734.44/86,587.10
  6. Step 6: Final answer
    x = 41,133.86

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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.