Home / 90,585.54-135,892.89-31,456.35

Finding the Fourth Proportional to 90,585.54, 135,892.89 and 31,456.35

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Solution

The fourth proportional to 90,585.54, 135,892.89 and 31,456.35 is: 47,189.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,585.54 : 135,892.89 = 31,456.35 : x
  2. Step 2: Convert to fraction form
    90,585.54/135,892.89 = 31,456.35/x
  3. Step 3: Cross multiply
    90,585.54x = 135,892.89 × 31,456.35
  4. Step 4: Simplify right side
    90,585.54x = 4,274,694,310.35
  5. Step 5: Solve for x
    x = 4,274,694,310.35/90,585.54
  6. Step 6: Final answer
    x = 47,189.59

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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.