Finding the Fourth Proportional to 39,957,801.12, 55,141,765.74 and 21,623,086.80
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Solution
The fourth proportional to 39,957,801.12, 55,141,765.74 and 21,623,086.80 is: 29,839,859.89
Step by Step Solution
- Step 1: Write the proportion equation
39,957,801.12 : 55,141,765.74 = 21,623,086.80 : x - Step 2: Convert to fraction form
39,957,801.12/55,141,765.74 = 21,623,086.80/x - Step 3: Cross multiply
39,957,801.12x = 55,141,765.74 × 21,623,086.80 - Step 4: Simplify right side
39,957,801.12x = 1,192,335,186,901,286.25 - Step 5: Solve for x
x = 1,192,335,186,901,286.25/39,957,801.12 - Step 6: Final answer
x = 29,839,859.89
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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.