Home / 81,074.84-121,529.62-45,940.28

Finding the Fourth Proportional to 81,074.84, 121,529.62 and 45,940.28

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Solution

The fourth proportional to 81,074.84, 121,529.62 and 45,940.28 is: 68,863.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,074.84 : 121,529.62 = 45,940.28 : x
  2. Step 2: Convert to fraction form
    81,074.84/121,529.62 = 45,940.28/x
  3. Step 3: Cross multiply
    81,074.84x = 121,529.62 × 45,940.28
  4. Step 4: Simplify right side
    81,074.84x = 5,583,104,771.09
  5. Step 5: Solve for x
    x = 5,583,104,771.09/81,074.84
  6. Step 6: Final answer
    x = 68,863.59

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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.