Home / 67,999.26-102,002.52-21,255.78

Finding the Fourth Proportional to 67,999.26, 102,002.52 and 21,255.78

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Solution

The fourth proportional to 67,999.26, 102,002.52 and 21,255.78 is: 31,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,999.26 : 102,002.52 = 21,255.78 : x
  2. Step 2: Convert to fraction form
    67,999.26/102,002.52 = 21,255.78/x
  3. Step 3: Cross multiply
    67,999.26x = 102,002.52 × 21,255.78
  4. Step 4: Simplify right side
    67,999.26x = 2,168,143,124.57
  5. Step 5: Solve for x
    x = 2,168,143,124.57/67,999.26
  6. Step 6: Final answer
    x = 31,884.80

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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.