Finding the Fourth Proportional to 90,319.62, 135,485.64 and 27,137.10
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Solution
The fourth proportional to 90,319.62, 135,485.64 and 27,137.10 is: 40,707.52
Step by Step Solution
- Step 1: Write the proportion equation
90,319.62 : 135,485.64 = 27,137.10 : x - Step 2: Convert to fraction form
90,319.62/135,485.64 = 27,137.10/x - Step 3: Cross multiply
90,319.62x = 135,485.64 × 27,137.10 - Step 4: Simplify right side
90,319.62x = 3,676,687,361.24 - Step 5: Solve for x
x = 3,676,687,361.24/90,319.62 - Step 6: Final answer
x = 40,707.52
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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.