Home / 87,511.89-130,936.60-51,992.28

Finding the Fourth Proportional to 87,511.89, 130,936.60 and 51,992.28

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Solution

The fourth proportional to 87,511.89, 130,936.60 and 51,992.28 is: 77,791.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,511.89 : 130,936.60 = 51,992.28 : x
  2. Step 2: Convert to fraction form
    87,511.89/130,936.60 = 51,992.28/x
  3. Step 3: Cross multiply
    87,511.89x = 130,936.60 × 51,992.28
  4. Step 4: Simplify right side
    87,511.89x = 6,807,692,434.44
  5. Step 5: Solve for x
    x = 6,807,692,434.44/87,511.89
  6. Step 6: Final answer
    x = 77,791.63

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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.