Home / 69,919.74-104,977.62-66,770.46

Finding the Fourth Proportional to 69,919.74, 104,977.62 and 66,770.46

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Solution

The fourth proportional to 69,919.74, 104,977.62 and 66,770.46 is: 100,249.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,919.74 : 104,977.62 = 66,770.46 : x
  2. Step 2: Convert to fraction form
    69,919.74/104,977.62 = 66,770.46/x
  3. Step 3: Cross multiply
    69,919.74x = 104,977.62 × 66,770.46
  4. Step 4: Simplify right side
    69,919.74x = 7,009,403,977.11
  5. Step 5: Solve for x
    x = 7,009,403,977.11/69,919.74
  6. Step 6: Final answer
    x = 100,249.29

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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.