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Finding the Fourth Proportional to 61,241.22, 91,861.83 and 19,688.22

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Solution

The fourth proportional to 61,241.22, 91,861.83 and 19,688.22 is: 29,532.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,241.22 : 91,861.83 = 19,688.22 : x
  2. Step 2: Convert to fraction form
    61,241.22/91,861.83 = 19,688.22/x
  3. Step 3: Cross multiply
    61,241.22x = 91,861.83 × 19,688.22
  4. Step 4: Simplify right side
    61,241.22x = 1,808,595,918.64
  5. Step 5: Solve for x
    x = 1,808,595,918.64/61,241.22
  6. Step 6: Final answer
    x = 29,532.33

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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.