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Finding the Fourth Proportional to 68,971.32, 95,178.28 and 38,755.89

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Solution

The fourth proportional to 68,971.32, 95,178.28 and 38,755.89 is: 53,481.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,971.32 : 95,178.28 = 38,755.89 : x
  2. Step 2: Convert to fraction form
    68,971.32/95,178.28 = 38,755.89/x
  3. Step 3: Cross multiply
    68,971.32x = 95,178.28 × 38,755.89
  4. Step 4: Simplify right side
    68,971.32x = 3,688,718,950.07
  5. Step 5: Solve for x
    x = 3,688,718,950.07/68,971.32
  6. Step 6: Final answer
    x = 53,481.92

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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.