Finding the Fourth Proportional to 91,212,072.80, 137,036,378.35 and 58,486,757.93
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Solution
The fourth proportional to 91,212,072.80, 137,036,378.35 and 58,486,757.93 is: 87,870,094.86
Step by Step Solution
- Step 1: Write the proportion equation
91,212,072.80 : 137,036,378.35 = 58,486,757.93 : x - Step 2: Convert to fraction form
91,212,072.80/137,036,378.35 = 58,486,757.93/x - Step 3: Cross multiply
91,212,072.80x = 137,036,378.35 × 58,486,757.93 - Step 4: Simplify right side
91,212,072.80x = 8,014,813,488,912,999 - Step 5: Solve for x
x = 8,014,813,488,912,999/91,212,072.80 - Step 6: Final answer
x = 87,870,094.86
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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.