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Finding the Fourth Proportional to 67,208.86, 100,827.87 and 20,460.52

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Solution

The fourth proportional to 67,208.86, 100,827.87 and 20,460.52 is: 30,695.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,208.86 : 100,827.87 = 20,460.52 : x
  2. Step 2: Convert to fraction form
    67,208.86/100,827.87 = 20,460.52/x
  3. Step 3: Cross multiply
    67,208.86x = 100,827.87 × 20,460.52
  4. Step 4: Simplify right side
    67,208.86x = 2,062,990,650.69
  5. Step 5: Solve for x
    x = 2,062,990,650.69/67,208.86
  6. Step 6: Final answer
    x = 30,695.22

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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.