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Finding the Fourth Proportional to 73,559, 110,338.78 and 18,155

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Solution

The fourth proportional to 73,559, 110,338.78 and 18,155 is: 27,232.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,559 : 110,338.78 = 18,155 : x
  2. Step 2: Convert to fraction form
    73,559/110,338.78 = 18,155/x
  3. Step 3: Cross multiply
    73,559x = 110,338.78 × 18,155
  4. Step 4: Simplify right side
    73,559x = 2,003,200,550.90
  5. Step 5: Solve for x
    x = 2,003,200,550.90/73,559
  6. Step 6: Final answer
    x = 27,232.57

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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.