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Finding the Fourth Proportional to 61,104.78, 91,652.94 and 18,983.88

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Solution

The fourth proportional to 61,104.78, 91,652.94 and 18,983.88 is: 28,474.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,104.78 : 91,652.94 = 18,983.88 : x
  2. Step 2: Convert to fraction form
    61,104.78/91,652.94 = 18,983.88/x
  3. Step 3: Cross multiply
    61,104.78x = 91,652.94 × 18,983.88
  4. Step 4: Simplify right side
    61,104.78x = 1,739,928,414.61
  5. Step 5: Solve for x
    x = 1,739,928,414.61/61,104.78
  6. Step 6: Final answer
    x = 28,474.51

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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.