Home / 91,273.36-125,919.78-55,457.60

Finding the Fourth Proportional to 91,273.36, 125,919.78 and 55,457.60

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Solution

The fourth proportional to 91,273.36, 125,919.78 and 55,457.60 is: 76,508.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,273.36 : 125,919.78 = 55,457.60 : x
  2. Step 2: Convert to fraction form
    91,273.36/125,919.78 = 55,457.60/x
  3. Step 3: Cross multiply
    91,273.36x = 125,919.78 × 55,457.60
  4. Step 4: Simplify right side
    91,273.36x = 6,983,208,791.33
  5. Step 5: Solve for x
    x = 6,983,208,791.33/91,273.36
  6. Step 6: Final answer
    x = 76,508.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.