Home / 87,826.76-131,726.72-28,662.40

Finding the Fourth Proportional to 87,826.76, 131,726.72 and 28,662.40

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Solution

The fourth proportional to 87,826.76, 131,726.72 and 28,662.40 is: 42,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,826.76 : 131,726.72 = 28,662.40 : x
  2. Step 2: Convert to fraction form
    87,826.76/131,726.72 = 28,662.40/x
  3. Step 3: Cross multiply
    87,826.76x = 131,726.72 × 28,662.40
  4. Step 4: Simplify right side
    87,826.76x = 3,775,603,939.33
  5. Step 5: Solve for x
    x = 3,775,603,939.33/87,826.76
  6. Step 6: Final answer
    x = 42,989.22

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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.