Finding the Fourth Proportional to 81,735.26, 122,528.63 and 72,877.91
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Solution
The fourth proportional to 81,735.26, 122,528.63 and 72,877.91 is: 109,250.65
Step by Step Solution
- Step 1: Write the proportion equation
81,735.26 : 122,528.63 = 72,877.91 : x - Step 2: Convert to fraction form
81,735.26/122,528.63 = 72,877.91/x - Step 3: Cross multiply
81,735.26x = 122,528.63 × 72,877.91 - Step 4: Simplify right side
81,735.26x = 8,929,629,492.53 - Step 5: Solve for x
x = 8,929,629,492.53/81,735.26 - Step 6: Final answer
x = 109,250.65
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1.5x scale
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.