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Finding the Fourth Proportional to 44,560, 66,840 and 11,728

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Solution

The fourth proportional to 44,560, 66,840 and 11,728 is: 17,592

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,560 : 66,840 = 11,728 : x
  2. Step 2: Convert to fraction form
    44,560/66,840 = 11,728/x
  3. Step 3: Cross multiply
    44,560x = 66,840 × 11,728
  4. Step 4: Simplify right side
    44,560x = 783,899,520
  5. Step 5: Solve for x
    x = 783,899,520/44,560
  6. Step 6: Final answer
    x = 17,592

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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.