Finding the Fourth Proportional to 71,659.62, 107,190.72 and 66,345.12
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Solution
The fourth proportional to 71,659.62, 107,190.72 and 66,345.12 is: 99,241.12
Step by Step Solution
- Step 1: Write the proportion equation
71,659.62 : 107,190.72 = 66,345.12 : x - Step 2: Convert to fraction form
71,659.62/107,190.72 = 66,345.12/x - Step 3: Cross multiply
71,659.62x = 107,190.72 × 66,345.12 - Step 4: Simplify right side
71,659.62x = 7,111,581,181.29 - Step 5: Solve for x
x = 7,111,581,181.29/71,659.62 - Step 6: Final answer
x = 99,241.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.