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Finding the Fourth Proportional to 40,940.63, 61,410.96 and 14,643.80

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Solution

The fourth proportional to 40,940.63, 61,410.96 and 14,643.80 is: 21,965.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,940.63 : 61,410.96 = 14,643.80 : x
  2. Step 2: Convert to fraction form
    40,940.63/61,410.96 = 14,643.80/x
  3. Step 3: Cross multiply
    40,940.63x = 61,410.96 × 14,643.80
  4. Step 4: Simplify right side
    40,940.63x = 899,289,816.05
  5. Step 5: Solve for x
    x = 899,289,816.05/40,940.63
  6. Step 6: Final answer
    x = 21,965.71

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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.