Home / 90,855.68-136,234.06-31,675.44

Finding the Fourth Proportional to 90,855.68, 136,234.06 and 31,675.44

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Solution

The fourth proportional to 90,855.68, 136,234.06 and 31,675.44 is: 47,495.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,855.68 : 136,234.06 = 31,675.44 : x
  2. Step 2: Convert to fraction form
    90,855.68/136,234.06 = 31,675.44/x
  3. Step 3: Cross multiply
    90,855.68x = 136,234.06 × 31,675.44
  4. Step 4: Simplify right side
    90,855.68x = 4,315,273,793.49
  5. Step 5: Solve for x
    x = 4,315,273,793.49/90,855.68
  6. Step 6: Final answer
    x = 47,495.92

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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.