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Finding the Fourth Proportional to 72,723.75, 100,359.37 and 40,892.37

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Solution

The fourth proportional to 72,723.75, 100,359.37 and 40,892.37 is: 56,431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,723.75 : 100,359.37 = 40,892.37 : x
  2. Step 2: Convert to fraction form
    72,723.75/100,359.37 = 40,892.37/x
  3. Step 3: Cross multiply
    72,723.75x = 100,359.37 × 40,892.37
  4. Step 4: Simplify right side
    72,723.75x = 4,103,932,491.01
  5. Step 5: Solve for x
    x = 4,103,932,491.01/72,723.75
  6. Step 6: Final answer
    x = 56,431.81

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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.