Finding the Fourth Proportional to 91,326.48, 125,968.32 and 79,369.44
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Solution
The fourth proportional to 91,326.48, 125,968.32 and 79,369.44 is: 109,475.75
Step by Step Solution
- Step 1: Write the proportion equation
91,326.48 : 125,968.32 = 79,369.44 : x - Step 2: Convert to fraction form
91,326.48/125,968.32 = 79,369.44/x - Step 3: Cross multiply
91,326.48x = 125,968.32 × 79,369.44 - Step 4: Simplify right side
91,326.48x = 9,998,035,016.14 - Step 5: Solve for x
x = 9,998,035,016.14/91,326.48 - Step 6: Final answer
x = 109,475.75
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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.