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Finding the Fourth Proportional to 61,241.46, 91,874.61 and 19,119.84

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Solution

The fourth proportional to 61,241.46, 91,874.61 and 19,119.84 is: 28,683.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,241.46 : 91,874.61 = 19,119.84 : x
  2. Step 2: Convert to fraction form
    61,241.46/91,874.61 = 19,119.84/x
  3. Step 3: Cross multiply
    61,241.46x = 91,874.61 × 19,119.84
  4. Step 4: Simplify right side
    61,241.46x = 1,756,627,843.26
  5. Step 5: Solve for x
    x = 1,756,627,843.26/61,241.46
  6. Step 6: Final answer
    x = 28,683.64

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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.