Home / 87,784.97-131,681.70-28,620.54

Finding the Fourth Proportional to 87,784.97, 131,681.70 and 28,620.54

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Solution

The fourth proportional to 87,784.97, 131,681.70 and 28,620.54 is: 42,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,784.97 : 131,681.70 = 28,620.54 : x
  2. Step 2: Convert to fraction form
    87,784.97/131,681.70 = 28,620.54/x
  3. Step 3: Cross multiply
    87,784.97x = 131,681.70 × 28,620.54
  4. Step 4: Simplify right side
    87,784.97x = 3,768,801,362.12
  5. Step 5: Solve for x
    x = 3,768,801,362.12/87,784.97
  6. Step 6: Final answer
    x = 42,932.20

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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.