Finding the Fourth Proportional to 88,640,678.52, 121,437,163.17 and 85,325,928.75
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Solution
The fourth proportional to 88,640,678.52, 121,437,163.17 and 85,325,928.75 is: 116,895,977.17
Step by Step Solution
- Step 1: Write the proportion equation
88,640,678.52 : 121,437,163.17 = 85,325,928.75 : x - Step 2: Convert to fraction form
88,640,678.52/121,437,163.17 = 85,325,928.75/x - Step 3: Cross multiply
88,640,678.52x = 121,437,163.17 × 85,325,928.75 - Step 4: Simplify right side
88,640,678.52x = 10,361,738,732,245,544 - Step 5: Solve for x
x = 10,361,738,732,245,544/88,640,678.52 - Step 6: Final answer
x = 116,895,977.17
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.