Finding the Fourth Proportional to 70,922,107.20, 97,876,893.99 and 39,132,121.40
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Solution
The fourth proportional to 70,922,107.20, 97,876,893.99 and 39,132,121.40 is: 54,004,747.58
Step by Step Solution
- Step 1: Write the proportion equation
70,922,107.20 : 97,876,893.99 = 39,132,121.40 : x - Step 2: Convert to fraction form
70,922,107.20/97,876,893.99 = 39,132,121.40/x - Step 3: Cross multiply
70,922,107.20x = 97,876,893.99 × 39,132,121.40 - Step 4: Simplify right side
70,922,107.20x = 3,830,130,497,382,226 - Step 5: Solve for x
x = 3,830,130,497,382,226/70,922,107.20 - Step 6: Final answer
x = 54,004,747.58
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.