Home / 90,890.42-136,397.92-31,726.09

Finding the Fourth Proportional to 90,890.42, 136,397.92 and 31,726.09

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Solution

The fourth proportional to 90,890.42, 136,397.92 and 31,726.09 is: 47,610.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,890.42 : 136,397.92 = 31,726.09 : x
  2. Step 2: Convert to fraction form
    90,890.42/136,397.92 = 31,726.09/x
  3. Step 3: Cross multiply
    90,890.42x = 136,397.92 × 31,726.09
  4. Step 4: Simplify right side
    90,890.42x = 4,327,372,265.42
  5. Step 5: Solve for x
    x = 4,327,372,265.42/90,890.42
  6. Step 6: Final answer
    x = 47,610.87

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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.