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Finding the Fourth Proportional to 74,621.81, 111,932.03 and 30,238.01

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Solution

The fourth proportional to 74,621.81, 111,932.03 and 30,238.01 is: 45,356.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,621.81 : 111,932.03 = 30,238.01 : x
  2. Step 2: Convert to fraction form
    74,621.81/111,932.03 = 30,238.01/x
  3. Step 3: Cross multiply
    74,621.81x = 111,932.03 × 30,238.01
  4. Step 4: Simplify right side
    74,621.81x = 3,384,601,608.05
  5. Step 5: Solve for x
    x = 3,384,601,608.05/74,621.81
  6. Step 6: Final answer
    x = 45,356.74

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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.