Finding the Fourth Proportional to 81,734.92, 122,688.30 and 72,434.44
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Solution
The fourth proportional to 81,734.92, 122,688.30 and 72,434.44 is: 108,727.80
Step by Step Solution
- Step 1: Write the proportion equation
81,734.92 : 122,688.30 = 72,434.44 : x - Step 2: Convert to fraction form
81,734.92/122,688.30 = 72,434.44/x - Step 3: Cross multiply
81,734.92x = 122,688.30 × 72,434.44 - Step 4: Simplify right side
81,734.92x = 8,886,858,305.05 - Step 5: Solve for x
x = 8,886,858,305.05/81,734.92 - Step 6: Final answer
x = 108,727.80
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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.