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Finding the Fourth Proportional to 68,334.60, 102,516.30 and 28,871.40

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Solution

The fourth proportional to 68,334.60, 102,516.30 and 28,871.40 is: 43,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,334.60 : 102,516.30 = 28,871.40 : x
  2. Step 2: Convert to fraction form
    68,334.60/102,516.30 = 28,871.40/x
  3. Step 3: Cross multiply
    68,334.60x = 102,516.30 × 28,871.40
  4. Step 4: Simplify right side
    68,334.60x = 2,959,789,103.82
  5. Step 5: Solve for x
    x = 2,959,789,103.82/68,334.60
  6. Step 6: Final answer
    x = 43,313.18

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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.