Home / 67,999.23-102,002.47-21,255.75

Finding the Fourth Proportional to 67,999.23, 102,002.47 and 21,255.75

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Solution

The fourth proportional to 67,999.23, 102,002.47 and 21,255.75 is: 31,884.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,999.23 : 102,002.47 = 21,255.75 : x
  2. Step 2: Convert to fraction form
    67,999.23/102,002.47 = 21,255.75/x
  3. Step 3: Cross multiply
    67,999.23x = 102,002.47 × 21,255.75
  4. Step 4: Simplify right side
    67,999.23x = 2,168,138,948.56
  5. Step 5: Solve for x
    x = 2,168,138,948.56/67,999.23
  6. Step 6: Final answer
    x = 31,884.76

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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.