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Finding the Fourth Proportional to 75,885.56, 104,757.91 and 68,688.96

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Solution

The fourth proportional to 75,885.56, 104,757.91 and 68,688.96 is: 94,823.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,885.56 : 104,757.91 = 68,688.96 : x
  2. Step 2: Convert to fraction form
    75,885.56/104,757.91 = 68,688.96/x
  3. Step 3: Cross multiply
    75,885.56x = 104,757.91 × 68,688.96
  4. Step 4: Simplify right side
    75,885.56x = 7,195,711,914.37
  5. Step 5: Solve for x
    x = 7,195,711,914.37/75,885.56
  6. Step 6: Final answer
    x = 94,823.21

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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.