Finding the Fourth Proportional to 78,112.41, 117,118.95 and 66,270.26
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Solution
The fourth proportional to 78,112.41, 117,118.95 and 66,270.26 is: 99,363.26
Step by Step Solution
- Step 1: Write the proportion equation
78,112.41 : 117,118.95 = 66,270.26 : x - Step 2: Convert to fraction form
78,112.41/117,118.95 = 66,270.26/x - Step 3: Cross multiply
78,112.41x = 117,118.95 × 66,270.26 - Step 4: Simplify right side
78,112.41x = 7,761,503,560.22 - Step 5: Solve for x
x = 7,761,503,560.22/78,112.41 - Step 6: Final answer
x = 99,363.26
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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.