Finding the Fourth Proportional to 76,586,841.81, 114,282,930.40 and 68,332,745.39
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Solution
The fourth proportional to 76,586,841.81, 114,282,930.40 and 68,332,745.39 is: 101,966,162.86
Step by Step Solution
- Step 1: Write the proportion equation
76,586,841.81 : 114,282,930.40 = 68,332,745.39 : x - Step 2: Convert to fraction form
76,586,841.81/114,282,930.40 = 68,332,745.39/x - Step 3: Cross multiply
76,586,841.81x = 114,282,930.40 × 68,332,745.39 - Step 4: Simplify right side
76,586,841.81x = 7,809,266,384,704,045 - Step 5: Solve for x
x = 7,809,266,384,704,045/76,586,841.81 - Step 6: Final answer
x = 101,966,162.86
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.