Finding the Fourth Proportional to 78,169.39, 117,411.01 and 46,640.99
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Solution
The fourth proportional to 78,169.39, 117,411.01 and 46,640.99 is: 70,055.12
Step by Step Solution
- Step 1: Write the proportion equation
78,169.39 : 117,411.01 = 46,640.99 : x - Step 2: Convert to fraction form
78,169.39/117,411.01 = 46,640.99/x - Step 3: Cross multiply
78,169.39x = 117,411.01 × 46,640.99 - Step 4: Simplify right side
78,169.39x = 5,476,165,920.22 - Step 5: Solve for x
x = 5,476,165,920.22/78,169.39 - Step 6: Final answer
x = 70,055.12
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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.