Home / 73,512.36-110,268-20,921.76

Finding the Fourth Proportional to 73,512.36, 110,268 and 20,921.76

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Solution

The fourth proportional to 73,512.36, 110,268 and 20,921.76 is: 31,382.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,512.36 : 110,268 = 20,921.76 : x
  2. Step 2: Convert to fraction form
    73,512.36/110,268 = 20,921.76/x
  3. Step 3: Cross multiply
    73,512.36x = 110,268 × 20,921.76
  4. Step 4: Simplify right side
    73,512.36x = 2,307,000,631.68
  5. Step 5: Solve for x
    x = 2,307,000,631.68/73,512.36
  6. Step 6: Final answer
    x = 31,382.49

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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.