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Finding the Fourth Proportional to 39,161, 58,741.68 and 11,459

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Solution

The fourth proportional to 39,161, 58,741.68 and 11,459 is: 17,188.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,161 : 58,741.68 = 11,459 : x
  2. Step 2: Convert to fraction form
    39,161/58,741.68 = 11,459/x
  3. Step 3: Cross multiply
    39,161x = 58,741.68 × 11,459
  4. Step 4: Simplify right side
    39,161x = 673,120,911.12
  5. Step 5: Solve for x
    x = 673,120,911.12/39,161
  6. Step 6: Final answer
    x = 17,188.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.