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Finding the Fourth Proportional to 61,310.21, 91,965.36 and 19,193.88

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Solution

The fourth proportional to 61,310.21, 91,965.36 and 19,193.88 is: 28,790.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,310.21 : 91,965.36 = 19,193.88 : x
  2. Step 2: Convert to fraction form
    61,310.21/91,965.36 = 19,193.88/x
  3. Step 3: Cross multiply
    61,310.21x = 91,965.36 × 19,193.88
  4. Step 4: Simplify right side
    61,310.21x = 1,765,172,084.00
  5. Step 5: Solve for x
    x = 1,765,172,084.00/61,310.21
  6. Step 6: Final answer
    x = 28,790.84

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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.