Finding the Fourth Proportional to 91,610,081.70, 137,415,122.55 and 77,261,174.70
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Solution
The fourth proportional to 91,610,081.70, 137,415,122.55 and 77,261,174.70 is: 115,891,762.05
Step by Step Solution
- Step 1: Write the proportion equation
91,610,081.70 : 137,415,122.55 = 77,261,174.70 : x - Step 2: Convert to fraction form
91,610,081.70/137,415,122.55 = 77,261,174.70/x - Step 3: Cross multiply
91,610,081.70x = 137,415,122.55 × 77,261,174.70 - Step 4: Simplify right side
91,610,081.70x = 10,616,853,789,757,460 - Step 5: Solve for x
x = 10,616,853,789,757,460/91,610,081.70 - Step 6: Final answer
x = 115,891,762.05
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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.