Finding the Fourth Proportional to 90,459.92, 135,694.14 and 74,635.62
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Solution
The fourth proportional to 90,459.92, 135,694.14 and 74,635.62 is: 111,956.94
Step by Step Solution
- Step 1: Write the proportion equation
90,459.92 : 135,694.14 = 74,635.62 : x - Step 2: Convert to fraction form
90,459.92/135,694.14 = 74,635.62/x - Step 3: Cross multiply
90,459.92x = 135,694.14 × 74,635.62 - Step 4: Simplify right side
90,459.92x = 10,127,616,269.27 - Step 5: Solve for x
x = 10,127,616,269.27/90,459.92 - Step 6: Final answer
x = 111,956.94
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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.