Home / 97,919.25-135,128.70-55,480.65

Finding the Fourth Proportional to 97,919.25, 135,128.70 and 55,480.65

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Solution

The fourth proportional to 97,919.25, 135,128.70 and 55,480.65 is: 76,563.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,919.25 : 135,128.70 = 55,480.65 : x
  2. Step 2: Convert to fraction form
    97,919.25/135,128.70 = 55,480.65/x
  3. Step 3: Cross multiply
    97,919.25x = 135,128.70 × 55,480.65
  4. Step 4: Simplify right side
    97,919.25x = 7,497,028,109.66
  5. Step 5: Solve for x
    x = 7,497,028,109.66/97,919.25
  6. Step 6: Final answer
    x = 76,563.37

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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.