Finding the Fourth Proportional to 85,523.08, 128,163.12 and 40,496.40
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Solution
The fourth proportional to 85,523.08, 128,163.12 and 40,496.40 is: 60,687.07
Step by Step Solution
- Step 1: Write the proportion equation
85,523.08 : 128,163.12 = 40,496.40 : x - Step 2: Convert to fraction form
85,523.08/128,163.12 = 40,496.40/x - Step 3: Cross multiply
85,523.08x = 128,163.12 × 40,496.40 - Step 4: Simplify right side
85,523.08x = 5,190,144,972.77 - Step 5: Solve for x
x = 5,190,144,972.77/85,523.08 - Step 6: Final answer
x = 60,687.07
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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.