Finding the Fourth Proportional to 66,405,986.10, 99,608,979.15 and 48,124,415.70
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Solution
The fourth proportional to 66,405,986.10, 99,608,979.15 and 48,124,415.70 is: 72,186,623.55
Step by Step Solution
- Step 1: Write the proportion equation
66,405,986.10 : 99,608,979.15 = 48,124,415.70 : x - Step 2: Convert to fraction form
66,405,986.10/99,608,979.15 = 48,124,415.70/x - Step 3: Cross multiply
66,405,986.10x = 99,608,979.15 × 48,124,415.70 - Step 4: Simplify right side
66,405,986.10x = 4,793,623,920,067,233 - Step 5: Solve for x
x = 4,793,623,920,067,233/66,405,986.10 - Step 6: Final answer
x = 72,186,623.55
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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.