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Finding the Fourth Proportional to 45,752.96, 68,629.44 and 12,920.96

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Solution

The fourth proportional to 45,752.96, 68,629.44 and 12,920.96 is: 19,381.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,752.96 : 68,629.44 = 12,920.96 : x
  2. Step 2: Convert to fraction form
    45,752.96/68,629.44 = 12,920.96/x
  3. Step 3: Cross multiply
    45,752.96x = 68,629.44 × 12,920.96
  4. Step 4: Simplify right side
    45,752.96x = 886,758,249.06
  5. Step 5: Solve for x
    x = 886,758,249.06/45,752.96
  6. Step 6: Final answer
    x = 19,381.44

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Similar ratio
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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.