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Finding the Fourth Proportional to 68,399.31, 102,635.08 and 48,537.15

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Solution

The fourth proportional to 68,399.31, 102,635.08 and 48,537.15 is: 72,831.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,399.31 : 102,635.08 = 48,537.15 : x
  2. Step 2: Convert to fraction form
    68,399.31/102,635.08 = 48,537.15/x
  3. Step 3: Cross multiply
    68,399.31x = 102,635.08 × 48,537.15
  4. Step 4: Simplify right side
    68,399.31x = 4,981,614,273.22
  5. Step 5: Solve for x
    x = 4,981,614,273.22/68,399.31
  6. Step 6: Final answer
    x = 72,831.35

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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.