Finding the Fourth Proportional to 90,857.58, 125,399.97 and 55,078.26
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Solution
The fourth proportional to 90,857.58, 125,399.97 and 55,078.26 is: 76,018.01
Step by Step Solution
- Step 1: Write the proportion equation
90,857.58 : 125,399.97 = 55,078.26 : x - Step 2: Convert to fraction form
90,857.58/125,399.97 = 55,078.26/x - Step 3: Cross multiply
90,857.58x = 125,399.97 × 55,078.26 - Step 4: Simplify right side
90,857.58x = 6,906,812,151.65 - Step 5: Solve for x
x = 6,906,812,151.65/90,857.58 - Step 6: Final answer
x = 76,018.01
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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.