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Finding the Fourth Proportional to 68,675.30, 94,733.22 and 39,991.58

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Solution

The fourth proportional to 68,675.30, 94,733.22 and 39,991.58 is: 55,165.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,675.30 : 94,733.22 = 39,991.58 : x
  2. Step 2: Convert to fraction form
    68,675.30/94,733.22 = 39,991.58/x
  3. Step 3: Cross multiply
    68,675.30x = 94,733.22 × 39,991.58
  4. Step 4: Simplify right side
    68,675.30x = 3,788,531,533.09
  5. Step 5: Solve for x
    x = 3,788,531,533.09/68,675.30
  6. Step 6: Final answer
    x = 55,165.85

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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.