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Finding the Fourth Proportional to 68,341.89, 102,527.86 and 20,963.49

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Solution

The fourth proportional to 68,341.89, 102,527.86 and 20,963.49 is: 31,449.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,341.89 : 102,527.86 = 20,963.49 : x
  2. Step 2: Convert to fraction form
    68,341.89/102,527.86 = 20,963.49/x
  3. Step 3: Cross multiply
    68,341.89x = 102,527.86 × 20,963.49
  4. Step 4: Simplify right side
    68,341.89x = 2,149,341,767.83
  5. Step 5: Solve for x
    x = 2,149,341,767.83/68,341.89
  6. Step 6: Final answer
    x = 31,449.84

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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.