Finding the Fourth Proportional to 85,493.49, 128,240.20 and 23,163.99
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Solution
The fourth proportional to 85,493.49, 128,240.20 and 23,163.99 is: 34,745.98
Step by Step Solution
- Step 1: Write the proportion equation
85,493.49 : 128,240.20 = 23,163.99 : x - Step 2: Convert to fraction form
85,493.49/128,240.20 = 23,163.99/x - Step 3: Cross multiply
85,493.49x = 128,240.20 × 23,163.99 - Step 4: Simplify right side
85,493.49x = 2,970,554,710.40 - Step 5: Solve for x
x = 2,970,554,710.40/85,493.49 - Step 6: Final answer
x = 34,745.98
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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.