Finding the Fourth Proportional to 71,732,907.70, 99,021,957.34 and 48,225,078.12
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Solution
The fourth proportional to 71,732,907.70, 99,021,957.34 and 48,225,078.12 is: 66,571,142.61
Step by Step Solution
- Step 1: Write the proportion equation
71,732,907.70 : 99,021,957.34 = 48,225,078.12 : x - Step 2: Convert to fraction form
71,732,907.70/99,021,957.34 = 48,225,078.12/x - Step 3: Cross multiply
71,732,907.70x = 99,021,957.34 × 48,225,078.12 - Step 4: Simplify right side
71,732,907.70x = 4,775,341,628,236,609 - Step 5: Solve for x
x = 4,775,341,628,236,609/71,732,907.70 - Step 6: Final answer
x = 66,571,142.61
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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.