Finding the Fourth Proportional to 91,105.68, 125,736.84 and 53,379.96
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Solution
The fourth proportional to 91,105.68, 125,736.84 and 53,379.96 is: 73,670.79
Step by Step Solution
- Step 1: Write the proportion equation
91,105.68 : 125,736.84 = 53,379.96 : x - Step 2: Convert to fraction form
91,105.68/125,736.84 = 53,379.96/x - Step 3: Cross multiply
91,105.68x = 125,736.84 × 53,379.96 - Step 4: Simplify right side
91,105.68x = 6,711,827,489.73 - Step 5: Solve for x
x = 6,711,827,489.73/91,105.68 - Step 6: Final answer
x = 73,670.79
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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.