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Finding the Fourth Proportional to 45,649.44, 68,474.52 and 12,369.78

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Solution

The fourth proportional to 45,649.44, 68,474.52 and 12,369.78 is: 18,554.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,649.44 : 68,474.52 = 12,369.78 : x
  2. Step 2: Convert to fraction form
    45,649.44/68,474.52 = 12,369.78/x
  3. Step 3: Cross multiply
    45,649.44x = 68,474.52 × 12,369.78
  4. Step 4: Simplify right side
    45,649.44x = 847,014,748.01
  5. Step 5: Solve for x
    x = 847,014,748.01/45,649.44
  6. Step 6: Final answer
    x = 18,554.77

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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.