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Finding the Fourth Proportional to 68,999.75, 103,411.32 and 35,713.61

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Solution

The fourth proportional to 68,999.75, 103,411.32 and 35,713.61 is: 53,524.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,999.75 : 103,411.32 = 35,713.61 : x
  2. Step 2: Convert to fraction form
    68,999.75/103,411.32 = 35,713.61/x
  3. Step 3: Cross multiply
    68,999.75x = 103,411.32 × 35,713.61
  4. Step 4: Simplify right side
    68,999.75x = 3,693,191,552.07
  5. Step 5: Solve for x
    x = 3,693,191,552.07/68,999.75
  6. Step 6: Final answer
    x = 53,524.71

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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.