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Finding the Fourth Proportional to 68,390.04, 94,383 and 38,181.30

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Solution

The fourth proportional to 68,390.04, 94,383 and 38,181.30 is: 52,692.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,390.04 : 94,383 = 38,181.30 : x
  2. Step 2: Convert to fraction form
    68,390.04/94,383 = 38,181.30/x
  3. Step 3: Cross multiply
    68,390.04x = 94,383 × 38,181.30
  4. Step 4: Simplify right side
    68,390.04x = 3,603,665,637.90
  5. Step 5: Solve for x
    x = 3,603,665,637.90/68,390.04
  6. Step 6: Final answer
    x = 52,692.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.