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Finding the Fourth Proportional to 69,170.89, 95,459.03 and 38,965.81

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Solution

The fourth proportional to 69,170.89, 95,459.03 and 38,965.81 is: 53,774.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,170.89 : 95,459.03 = 38,965.81 : x
  2. Step 2: Convert to fraction form
    69,170.89/95,459.03 = 38,965.81/x
  3. Step 3: Cross multiply
    69,170.89x = 95,459.03 × 38,965.81
  4. Step 4: Simplify right side
    69,170.89x = 3,719,638,230.94
  5. Step 5: Solve for x
    x = 3,719,638,230.94/69,170.89
  6. Step 6: Final answer
    x = 53,774.62

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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.