Home / 74,015.75-102,144.17-40,481.75

Finding the Fourth Proportional to 74,015.75, 102,144.17 and 40,481.75

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Solution

The fourth proportional to 74,015.75, 102,144.17 and 40,481.75 is: 55,866.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,015.75 : 102,144.17 = 40,481.75 : x
  2. Step 2: Convert to fraction form
    74,015.75/102,144.17 = 40,481.75/x
  3. Step 3: Cross multiply
    74,015.75x = 102,144.17 × 40,481.75
  4. Step 4: Simplify right side
    74,015.75x = 4,134,974,753.90
  5. Step 5: Solve for x
    x = 4,134,974,753.90/74,015.75
  6. Step 6: Final answer
    x = 55,866.15

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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.