Finding the Fourth Proportional to 78,110.19, 117,141.08 and 28,183.82
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Solution
The fourth proportional to 78,110.19, 117,141.08 and 28,183.82 is: 42,266.99
Step by Step Solution
- Step 1: Write the proportion equation
78,110.19 : 117,141.08 = 28,183.82 : x - Step 2: Convert to fraction form
78,110.19/117,141.08 = 28,183.82/x - Step 3: Cross multiply
78,110.19x = 117,141.08 × 28,183.82 - Step 4: Simplify right side
78,110.19x = 3,301,482,386.70 - Step 5: Solve for x
x = 3,301,482,386.70/78,110.19 - Step 6: Final answer
x = 42,266.99
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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.