Finding the Fourth Proportional to 30,482,654.18, 42,100,975.40 and 20,075,193.99
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Solution
The fourth proportional to 30,482,654.18, 42,100,975.40 and 20,075,193.99 is: 27,726,760.39
Step by Step Solution
- Step 1: Write the proportion equation
30,482,654.18 : 42,100,975.40 = 20,075,193.99 : x - Step 2: Convert to fraction form
30,482,654.18/42,100,975.40 = 20,075,193.99/x - Step 3: Cross multiply
30,482,654.18x = 42,100,975.40 × 20,075,193.99 - Step 4: Simplify right side
30,482,654.18x = 845,185,248,222,841.88 - Step 5: Solve for x
x = 845,185,248,222,841.88/30,482,654.18 - Step 6: Final answer
x = 27,726,760.39
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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.