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Finding the Fourth Proportional to 45,499.88, 68,249.82 and 12,667.88

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Solution

The fourth proportional to 45,499.88, 68,249.82 and 12,667.88 is: 19,001.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,499.88 : 68,249.82 = 12,667.88 : x
  2. Step 2: Convert to fraction form
    45,499.88/68,249.82 = 12,667.88/x
  3. Step 3: Cross multiply
    45,499.88x = 68,249.82 × 12,667.88
  4. Step 4: Simplify right side
    45,499.88x = 864,580,188.53
  5. Step 5: Solve for x
    x = 864,580,188.53/45,499.88
  6. Step 6: Final answer
    x = 19,001.81

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1.5x scale

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.