Home / 74,121.20-102,288.08-40,130.43

Finding the Fourth Proportional to 74,121.20, 102,288.08 and 40,130.43

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Solution

The fourth proportional to 74,121.20, 102,288.08 and 40,130.43 is: 55,380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,121.20 : 102,288.08 = 40,130.43 : x
  2. Step 2: Convert to fraction form
    74,121.20/102,288.08 = 40,130.43/x
  3. Step 3: Cross multiply
    74,121.20x = 102,288.08 × 40,130.43
  4. Step 4: Simplify right side
    74,121.20x = 4,104,864,634.27
  5. Step 5: Solve for x
    x = 4,104,864,634.27/74,121.20
  6. Step 6: Final answer
    x = 55,380.44

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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.