Home / 90,998.40-136,517.04-31,836

Finding the Fourth Proportional to 90,998.40, 136,517.04 and 31,836

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Solution

The fourth proportional to 90,998.40, 136,517.04 and 31,836 is: 47,760.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,998.40 : 136,517.04 = 31,836 : x
  2. Step 2: Convert to fraction form
    90,998.40/136,517.04 = 31,836/x
  3. Step 3: Cross multiply
    90,998.40x = 136,517.04 × 31,836
  4. Step 4: Simplify right side
    90,998.40x = 4,346,156,326.26
  5. Step 5: Solve for x
    x = 4,346,156,326.26/90,998.40
  6. Step 6: Final answer
    x = 47,760.80

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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.