Finding the Fourth Proportional to 85,371.09, 128,075.66 and 26,212.74
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Solution
The fourth proportional to 85,371.09, 128,075.66 and 26,212.74 is: 39,324.95
Step by Step Solution
- Step 1: Write the proportion equation
85,371.09 : 128,075.66 = 26,212.74 : x - Step 2: Convert to fraction form
85,371.09/128,075.66 = 26,212.74/x - Step 3: Cross multiply
85,371.09x = 128,075.66 × 26,212.74 - Step 4: Simplify right side
85,371.09x = 3,357,213,975.91 - Step 5: Solve for x
x = 3,357,213,975.91/85,371.09 - Step 6: Final answer
x = 39,324.95
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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.