Home / 69,955.12-104,917.72-20,021.81

Finding the Fourth Proportional to 69,955.12, 104,917.72 and 20,021.81

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Solution

The fourth proportional to 69,955.12, 104,917.72 and 20,021.81 is: 30,028.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,955.12 : 104,917.72 = 20,021.81 : x
  2. Step 2: Convert to fraction form
    69,955.12/104,917.72 = 20,021.81/x
  3. Step 3: Cross multiply
    69,955.12x = 104,917.72 × 20,021.81
  4. Step 4: Simplify right side
    69,955.12x = 2,100,642,655.47
  5. Step 5: Solve for x
    x = 2,100,642,655.47/69,955.12
  6. Step 6: Final answer
    x = 30,028.43

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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.