Finding the Fourth Proportional to 85,571.70, 128,248.20 and 41,102.70
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Solution
The fourth proportional to 85,571.70, 128,248.20 and 41,102.70 is: 61,601.53
Step by Step Solution
- Step 1: Write the proportion equation
85,571.70 : 128,248.20 = 41,102.70 : x - Step 2: Convert to fraction form
85,571.70/128,248.20 = 41,102.70/x - Step 3: Cross multiply
85,571.70x = 128,248.20 × 41,102.70 - Step 4: Simplify right side
85,571.70x = 5,271,347,290.14 - Step 5: Solve for x
x = 5,271,347,290.14/85,571.70 - Step 6: Final answer
x = 61,601.53
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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.