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Finding the Fourth Proportional to 68,369.76, 102,541.65 and 28,954.54

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Solution

The fourth proportional to 68,369.76, 102,541.65 and 28,954.54 is: 43,426.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,369.76 : 102,541.65 = 28,954.54 : x
  2. Step 2: Convert to fraction form
    68,369.76/102,541.65 = 28,954.54/x
  3. Step 3: Cross multiply
    68,369.76x = 102,541.65 × 28,954.54
  4. Step 4: Simplify right side
    68,369.76x = 2,969,046,306.59
  5. Step 5: Solve for x
    x = 2,969,046,306.59/68,369.76
  6. Step 6: Final answer
    x = 43,426.31

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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.