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Finding the Fourth Proportional to 57,505.50, 79,356.96 and 40,302

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Solution

The fourth proportional to 57,505.50, 79,356.96 and 40,302 is: 55,616.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,505.50 : 79,356.96 = 40,302 : x
  2. Step 2: Convert to fraction form
    57,505.50/79,356.96 = 40,302/x
  3. Step 3: Cross multiply
    57,505.50x = 79,356.96 × 40,302
  4. Step 4: Simplify right side
    57,505.50x = 3,198,244,201.92
  5. Step 5: Solve for x
    x = 3,198,244,201.92/57,505.50
  6. Step 6: Final answer
    x = 55,616.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.