Home / 87,588.31-131,399.78-31,413.39

Finding the Fourth Proportional to 87,588.31, 131,399.78 and 31,413.39

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Solution

The fourth proportional to 87,588.31, 131,399.78 and 31,413.39 is: 47,126.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,588.31 : 131,399.78 = 31,413.39 : x
  2. Step 2: Convert to fraction form
    87,588.31/131,399.78 = 31,413.39/x
  3. Step 3: Cross multiply
    87,588.31x = 131,399.78 × 31,413.39
  4. Step 4: Simplify right side
    87,588.31x = 4,127,712,377.99
  5. Step 5: Solve for x
    x = 4,127,712,377.99/87,588.31
  6. Step 6: Final answer
    x = 47,126.29

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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.