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Finding the Fourth Proportional to 45,251, 67,878.33 and 21,546.35

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Solution

The fourth proportional to 45,251, 67,878.33 and 21,546.35 is: 32,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,251 : 67,878.33 = 21,546.35 : x
  2. Step 2: Convert to fraction form
    45,251/67,878.33 = 21,546.35/x
  3. Step 3: Cross multiply
    45,251x = 67,878.33 × 21,546.35
  4. Step 4: Simplify right side
    45,251x = 1,462,530,255.60
  5. Step 5: Solve for x
    x = 1,462,530,255.60/45,251
  6. Step 6: Final answer
    x = 32,320.40

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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.