Finding the Fourth Proportional to 71,782,350.09, 99,059,139.21 and 39,187,302.09
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Solution
The fourth proportional to 71,782,350.09, 99,059,139.21 and 39,187,302.09 is: 54,078,201.79
Step by Step Solution
- Step 1: Write the proportion equation
71,782,350.09 : 99,059,139.21 = 39,187,302.09 : x - Step 2: Convert to fraction form
71,782,350.09/99,059,139.21 = 39,187,302.09/x - Step 3: Cross multiply
71,782,350.09x = 99,059,139.21 × 39,187,302.09 - Step 4: Simplify right side
71,782,350.09x = 3,881,860,412,997,634 - Step 5: Solve for x
x = 3,881,860,412,997,634/71,782,350.09 - Step 6: Final answer
x = 54,078,201.79
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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.