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Finding the Fourth Proportional to 68,361.94, 94,340.37 and 39,688.30

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Solution

The fourth proportional to 68,361.94, 94,340.37 and 39,688.30 is: 54,770.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,361.94 : 94,340.37 = 39,688.30 : x
  2. Step 2: Convert to fraction form
    68,361.94/94,340.37 = 39,688.30/x
  3. Step 3: Cross multiply
    68,361.94x = 94,340.37 × 39,688.30
  4. Step 4: Simplify right side
    68,361.94x = 3,744,208,906.67
  5. Step 5: Solve for x
    x = 3,744,208,906.67/68,361.94
  6. Step 6: Final answer
    x = 54,770.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.