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Finding the Fourth Proportional to 45,347.70, 68,021.46 and 12,067.80

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Solution

The fourth proportional to 45,347.70, 68,021.46 and 12,067.80 is: 18,101.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,347.70 : 68,021.46 = 12,067.80 : x
  2. Step 2: Convert to fraction form
    45,347.70/68,021.46 = 12,067.80/x
  3. Step 3: Cross multiply
    45,347.70x = 68,021.46 × 12,067.80
  4. Step 4: Simplify right side
    45,347.70x = 820,869,374.99
  5. Step 5: Solve for x
    x = 820,869,374.99/45,347.70
  6. Step 6: Final answer
    x = 18,101.68

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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.