Home / 87,826-131,740.98-31,670.68

Finding the Fourth Proportional to 87,826, 131,740.98 and 31,670.68

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Solution

The fourth proportional to 87,826, 131,740.98 and 31,670.68 is: 47,506.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,826 : 131,740.98 = 31,670.68 : x
  2. Step 2: Convert to fraction form
    87,826/131,740.98 = 31,670.68/x
  3. Step 3: Cross multiply
    87,826x = 131,740.98 × 31,670.68
  4. Step 4: Simplify right side
    87,826x = 4,172,326,420.47
  5. Step 5: Solve for x
    x = 4,172,326,420.47/87,826
  6. Step 6: Final answer
    x = 47,506.73

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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.