Home / 87,853.77-131,782.28-31,698.09

Finding the Fourth Proportional to 87,853.77, 131,782.28 and 31,698.09

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Solution

The fourth proportional to 87,853.77, 131,782.28 and 31,698.09 is: 47,547.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,853.77 : 131,782.28 = 31,698.09 : x
  2. Step 2: Convert to fraction form
    87,853.77/131,782.28 = 31,698.09/x
  3. Step 3: Cross multiply
    87,853.77x = 131,782.28 × 31,698.09
  4. Step 4: Simplify right side
    87,853.77x = 4,177,246,413.35
  5. Step 5: Solve for x
    x = 4,177,246,413.35/87,853.77
  6. Step 6: Final answer
    x = 47,547.72

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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.