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Finding the Fourth Proportional to 91,448.56, 125,918.48 and 80,054.28

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Solution

The fourth proportional to 91,448.56, 125,918.48 and 80,054.28 is: 110,229.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,448.56 : 125,918.48 = 80,054.28 : x
  2. Step 2: Convert to fraction form
    91,448.56/125,918.48 = 80,054.28/x
  3. Step 3: Cross multiply
    91,448.56x = 125,918.48 × 80,054.28
  4. Step 4: Simplify right side
    91,448.56x = 10,080,313,255.09
  5. Step 5: Solve for x
    x = 10,080,313,255.09/91,448.56
  6. Step 6: Final answer
    x = 110,229.33

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1.5x scale

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.