Home / 74,015.36-102,143.66-40,481.36

Finding the Fourth Proportional to 74,015.36, 102,143.66 and 40,481.36

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Solution

The fourth proportional to 74,015.36, 102,143.66 and 40,481.36 is: 55,865.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,015.36 : 102,143.66 = 40,481.36 : x
  2. Step 2: Convert to fraction form
    74,015.36/102,143.66 = 40,481.36/x
  3. Step 3: Cross multiply
    74,015.36x = 102,143.66 × 40,481.36
  4. Step 4: Simplify right side
    74,015.36x = 4,134,914,272.18
  5. Step 5: Solve for x
    x = 4,134,914,272.18/74,015.36
  6. Step 6: Final answer
    x = 55,865.62

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1.5x scale

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.