Finding the Fourth Proportional to 91,334.48, 125,979.36 and 79,377.44
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Solution
The fourth proportional to 91,334.48, 125,979.36 and 79,377.44 is: 109,486.79
Step by Step Solution
- Step 1: Write the proportion equation
91,334.48 : 125,979.36 = 79,377.44 : x - Step 2: Convert to fraction form
91,334.48/125,979.36 = 79,377.44/x - Step 3: Cross multiply
91,334.48x = 125,979.36 × 79,377.44 - Step 4: Simplify right side
91,334.48x = 9,999,919,089.64 - Step 5: Solve for x
x = 9,999,919,089.64/91,334.48 - Step 6: Final answer
x = 109,486.79
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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.