Home / 66,937.33-100,406.72-20,190.61

Finding the Fourth Proportional to 66,937.33, 100,406.72 and 20,190.61

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Solution

The fourth proportional to 66,937.33, 100,406.72 and 20,190.61 is: 30,286.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,937.33 : 100,406.72 = 20,190.61 : x
  2. Step 2: Convert to fraction form
    66,937.33/100,406.72 = 20,190.61/x
  3. Step 3: Cross multiply
    66,937.33x = 100,406.72 × 20,190.61
  4. Step 4: Simplify right side
    66,937.33x = 2,027,272,924.90
  5. Step 5: Solve for x
    x = 2,027,272,924.90/66,937.33
  6. Step 6: Final answer
    x = 30,286.13

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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.