Finding the Fourth Proportional to 90,639.23, 135,958.50 and 22,251.05
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Solution
The fourth proportional to 90,639.23, 135,958.50 and 22,251.05 is: 33,376.50
Step by Step Solution
- Step 1: Write the proportion equation
90,639.23 : 135,958.50 = 22,251.05 : x - Step 2: Convert to fraction form
90,639.23/135,958.50 = 22,251.05/x - Step 3: Cross multiply
90,639.23x = 135,958.50 × 22,251.05 - Step 4: Simplify right side
90,639.23x = 3,025,219,976.24 - Step 5: Solve for x
x = 3,025,219,976.24/90,639.23 - Step 6: Final answer
x = 33,376.50
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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.