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Finding the Fourth Proportional to 45,503, 68,256.94 and 14,340.68

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Solution

The fourth proportional to 45,503, 68,256.94 and 14,340.68 is: 21,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,503 : 68,256.94 = 14,340.68 : x
  2. Step 2: Convert to fraction form
    45,503/68,256.94 = 14,340.68/x
  3. Step 3: Cross multiply
    45,503x = 68,256.94 × 14,340.68
  4. Step 4: Simplify right side
    45,503x = 978,850,934.32
  5. Step 5: Solve for x
    x = 978,850,934.32/45,503
  6. Step 6: Final answer
    x = 21,511.79

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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.