Home / 74,046.40-102,183.20-40,512

Finding the Fourth Proportional to 74,046.40, 102,183.20 and 40,512

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Solution

The fourth proportional to 74,046.40, 102,183.20 and 40,512 is: 55,906.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,046.40 : 102,183.20 = 40,512 : x
  2. Step 2: Convert to fraction form
    74,046.40/102,183.20 = 40,512/x
  3. Step 3: Cross multiply
    74,046.40x = 102,183.20 × 40,512
  4. Step 4: Simplify right side
    74,046.40x = 4,139,645,798.40
  5. Step 5: Solve for x
    x = 4,139,645,798.40/74,046.40
  6. Step 6: Final answer
    x = 55,906.10

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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.