Finding the Fourth Proportional to 83,571.93, 115,346.25 and 56,723.09
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Solution
The fourth proportional to 83,571.93, 115,346.25 and 56,723.09 is: 78,289.39
Step by Step Solution
- Step 1: Write the proportion equation
83,571.93 : 115,346.25 = 56,723.09 : x - Step 2: Convert to fraction form
83,571.93/115,346.25 = 56,723.09/x - Step 3: Cross multiply
83,571.93x = 115,346.25 × 56,723.09 - Step 4: Simplify right side
83,571.93x = 6,542,795,436.30 - Step 5: Solve for x
x = 6,542,795,436.30/83,571.93 - Step 6: Final answer
x = 78,289.39
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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.