Home / 73,018.69-109,546.26-20,427.78

Finding the Fourth Proportional to 73,018.69, 109,546.26 and 20,427.78

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Solution

The fourth proportional to 73,018.69, 109,546.26 and 20,427.78 is: 30,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,018.69 : 109,546.26 = 20,427.78 : x
  2. Step 2: Convert to fraction form
    73,018.69/109,546.26 = 20,427.78/x
  3. Step 3: Cross multiply
    73,018.69x = 109,546.26 × 20,427.78
  4. Step 4: Simplify right side
    73,018.69x = 2,237,786,899.10
  5. Step 5: Solve for x
    x = 2,237,786,899.10/73,018.69
  6. Step 6: Final answer
    x = 30,646.77

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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.