Home / 87,990.53-131,996.04-31,857.07

Finding the Fourth Proportional to 87,990.53, 131,996.04 and 31,857.07

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Solution

The fourth proportional to 87,990.53, 131,996.04 and 31,857.07 is: 47,789.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,990.53 : 131,996.04 = 31,857.07 : x
  2. Step 2: Convert to fraction form
    87,990.53/131,996.04 = 31,857.07/x
  3. Step 3: Cross multiply
    87,990.53x = 131,996.04 × 31,857.07
  4. Step 4: Simplify right side
    87,990.53x = 4,205,007,479.28
  5. Step 5: Solve for x
    x = 4,205,007,479.28/87,990.53
  6. Step 6: Final answer
    x = 47,789.32

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1.5x scale

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.