Home / 31,814.20-47,721.30-29,999.80

Finding the Fourth Proportional to 31,814.20, 47,721.30 and 29,999.80

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Solution

The fourth proportional to 31,814.20, 47,721.30 and 29,999.80 is: 44,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,814.20 : 47,721.30 = 29,999.80 : x
  2. Step 2: Convert to fraction form
    31,814.20/47,721.30 = 29,999.80/x
  3. Step 3: Cross multiply
    31,814.20x = 47,721.30 × 29,999.80
  4. Step 4: Simplify right side
    31,814.20x = 1,431,629,455.74
  5. Step 5: Solve for x
    x = 1,431,629,455.74/31,814.20
  6. Step 6: Final answer
    x = 44,999.70

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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.