Finding the Fourth Proportional to 90,439.27, 124,662.39 and 71,287.99
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Solution
The fourth proportional to 90,439.27, 124,662.39 and 71,287.99 is: 98,264.08
Step by Step Solution
- Step 1: Write the proportion equation
90,439.27 : 124,662.39 = 71,287.99 : x - Step 2: Convert to fraction form
90,439.27/124,662.39 = 71,287.99/x - Step 3: Cross multiply
90,439.27x = 124,662.39 × 71,287.99 - Step 4: Simplify right side
90,439.27x = 8,886,931,211.70 - Step 5: Solve for x
x = 8,886,931,211.70/90,439.27 - Step 6: Final answer
x = 98,264.08
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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.