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Finding the Fourth Proportional to 79,127.94, 118,692.12 and 19,963.61

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Solution

The fourth proportional to 79,127.94, 118,692.12 and 19,963.61 is: 29,945.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,127.94 : 118,692.12 = 19,963.61 : x
  2. Step 2: Convert to fraction form
    79,127.94/118,692.12 = 19,963.61/x
  3. Step 3: Cross multiply
    79,127.94x = 118,692.12 × 19,963.61
  4. Step 4: Simplify right side
    79,127.94x = 2,369,522,882.39
  5. Step 5: Solve for x
    x = 2,369,522,882.39/79,127.94
  6. Step 6: Final answer
    x = 29,945.46

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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.