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Finding the Fourth Proportional to 68,391.76, 94,383.48 and 38,178.76

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Solution

The fourth proportional to 68,391.76, 94,383.48 and 38,178.76 is: 52,688.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,391.76 : 94,383.48 = 38,178.76 : x
  2. Step 2: Convert to fraction form
    68,391.76/94,383.48 = 38,178.76/x
  3. Step 3: Cross multiply
    68,391.76x = 94,383.48 × 38,178.76
  4. Step 4: Simplify right side
    68,391.76x = 3,603,444,230.88
  5. Step 5: Solve for x
    x = 3,603,444,230.88/68,391.76
  6. Step 6: Final answer
    x = 52,688.28

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