Home / 81,214.47-121,739.93-33,855.79

Finding the Fourth Proportional to 81,214.47, 121,739.93 and 33,855.79

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Solution

The fourth proportional to 81,214.47, 121,739.93 and 33,855.79 is: 50,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,214.47 : 121,739.93 = 33,855.79 : x
  2. Step 2: Convert to fraction form
    81,214.47/121,739.93 = 33,855.79/x
  3. Step 3: Cross multiply
    81,214.47x = 121,739.93 × 33,855.79
  4. Step 4: Simplify right side
    81,214.47x = 4,121,601,504.69
  5. Step 5: Solve for x
    x = 4,121,601,504.69/81,214.47
  6. Step 6: Final answer
    x = 50,749.60

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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.