Home / 90,872.58-136,299.14-31,709.37

Finding the Fourth Proportional to 90,872.58, 136,299.14 and 31,709.37

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Solution

The fourth proportional to 90,872.58, 136,299.14 and 31,709.37 is: 47,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,872.58 : 136,299.14 = 31,709.37 : x
  2. Step 2: Convert to fraction form
    90,872.58/136,299.14 = 31,709.37/x
  3. Step 3: Cross multiply
    90,872.58x = 136,299.14 × 31,709.37
  4. Step 4: Simplify right side
    90,872.58x = 4,321,959,702.39
  5. Step 5: Solve for x
    x = 4,321,959,702.39/90,872.58
  6. Step 6: Final answer
    x = 47,560.66

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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.