Finding the Fourth Proportional to 39,975,311.52, 55,166,108.82 and 21,640,596.96
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Solution
The fourth proportional to 39,975,311.52, 55,166,108.82 and 21,640,596.96 is: 29,864,120.66
Step by Step Solution
- Step 1: Write the proportion equation
39,975,311.52 : 55,166,108.82 = 21,640,596.96 : x - Step 2: Convert to fraction form
39,975,311.52/55,166,108.82 = 21,640,596.96/x - Step 3: Cross multiply
39,975,311.52x = 55,166,108.82 × 21,640,596.96 - Step 4: Simplify right side
39,975,311.52x = 1,193,827,526,825,121.25 - Step 5: Solve for x
x = 1,193,827,526,825,121.25/39,975,311.52 - Step 6: Final answer
x = 29,864,120.66
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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.