Home / 90,659.21-136,033.37-40,774.55

Finding the Fourth Proportional to 90,659.21, 136,033.37 and 40,774.55

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Solution

The fourth proportional to 90,659.21, 136,033.37 and 40,774.55 is: 61,181.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,659.21 : 136,033.37 = 40,774.55 : x
  2. Step 2: Convert to fraction form
    90,659.21/136,033.37 = 40,774.55/x
  3. Step 3: Cross multiply
    90,659.21x = 136,033.37 × 40,774.55
  4. Step 4: Simplify right side
    90,659.21x = 5,546,698,562.69
  5. Step 5: Solve for x
    x = 5,546,698,562.69/90,659.21
  6. Step 6: Final answer
    x = 61,181.86

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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.