Home / 90,789.72-136,247.22-31,625.88

Finding the Fourth Proportional to 90,789.72, 136,247.22 and 31,625.88

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Solution

The fourth proportional to 90,789.72, 136,247.22 and 31,625.88 is: 47,460.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,789.72 : 136,247.22 = 31,625.88 : x
  2. Step 2: Convert to fraction form
    90,789.72/136,247.22 = 31,625.88/x
  3. Step 3: Cross multiply
    90,789.72x = 136,247.22 × 31,625.88
  4. Step 4: Simplify right side
    90,789.72x = 4,308,938,230.05
  5. Step 5: Solve for x
    x = 4,308,938,230.05/90,789.72
  6. Step 6: Final answer
    x = 47,460.64

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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.