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Finding the Fourth Proportional to 40,753.94, 61,130.90 and 11,171.99

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Solution

The fourth proportional to 40,753.94, 61,130.90 and 11,171.99 is: 16,757.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,753.94 : 61,130.90 = 11,171.99 : x
  2. Step 2: Convert to fraction form
    40,753.94/61,130.90 = 11,171.99/x
  3. Step 3: Cross multiply
    40,753.94x = 61,130.90 × 11,171.99
  4. Step 4: Simplify right side
    40,753.94x = 682,953,984.25
  5. Step 5: Solve for x
    x = 682,953,984.25/40,753.94
  6. Step 6: Final answer
    x = 16,757.99

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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.