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Finding the Fourth Proportional to 47,728, 71,578.23 and 14,440.24

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Solution

The fourth proportional to 47,728, 71,578.23 and 14,440.24 is: 21,656.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,728 : 71,578.23 = 14,440.24 : x
  2. Step 2: Convert to fraction form
    47,728/71,578.23 = 14,440.24/x
  3. Step 3: Cross multiply
    47,728x = 71,578.23 × 14,440.24
  4. Step 4: Simplify right side
    47,728x = 1,033,606,819.98
  5. Step 5: Solve for x
    x = 1,033,606,819.98/47,728
  6. Step 6: Final answer
    x = 21,656.19

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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.