Home / 90,961.23-136,456.43-38,378.46

Finding the Fourth Proportional to 90,961.23, 136,456.43 and 38,378.46

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Solution

The fourth proportional to 90,961.23, 136,456.43 and 38,378.46 is: 57,573.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,961.23 : 136,456.43 = 38,378.46 : x
  2. Step 2: Convert to fraction form
    90,961.23/136,456.43 = 38,378.46/x
  3. Step 3: Cross multiply
    90,961.23x = 136,456.43 × 38,378.46
  4. Step 4: Simplify right side
    90,961.23x = 5,236,987,640.50
  5. Step 5: Solve for x
    x = 5,236,987,640.50/90,961.23
  6. Step 6: Final answer
    x = 57,573.84

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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.