Finding the Fourth Proportional to 18,421,203.60, 27,631,805.40 and 4,958,031.60
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Solution
The fourth proportional to 18,421,203.60, 27,631,805.40 and 4,958,031.60 is: 7,437,047.40
Step by Step Solution
- Step 1: Write the proportion equation
18,421,203.60 : 27,631,805.40 = 4,958,031.60 : x - Step 2: Convert to fraction form
18,421,203.60/27,631,805.40 = 4,958,031.60/x - Step 3: Cross multiply
18,421,203.60x = 27,631,805.40 × 4,958,031.60 - Step 4: Simplify right side
18,421,203.60x = 136,999,364,338,250.62 - Step 5: Solve for x
x = 136,999,364,338,250.62/18,421,203.60 - Step 6: Final answer
x = 7,437,047.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.