Finding the Fourth Proportional to 78,200.67, 117,289.13 and 25,608.99
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Solution
The fourth proportional to 78,200.67, 117,289.13 and 25,608.99 is: 38,409.59
Step by Step Solution
- Step 1: Write the proportion equation
78,200.67 : 117,289.13 = 25,608.99 : x - Step 2: Convert to fraction form
78,200.67/117,289.13 = 25,608.99/x - Step 3: Cross multiply
78,200.67x = 117,289.13 × 25,608.99 - Step 4: Simplify right side
78,200.67x = 3,003,656,029.23 - Step 5: Solve for x
x = 3,003,656,029.23/78,200.67 - Step 6: Final answer
x = 38,409.59
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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.