Finding the Fourth Proportional to 20,138,310.30, 30,207,465.45 and 5,762,235.90
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Solution
The fourth proportional to 20,138,310.30, 30,207,465.45 and 5,762,235.90 is: 8,643,353.85
Step by Step Solution
- Step 1: Write the proportion equation
20,138,310.30 : 30,207,465.45 = 5,762,235.90 : x - Step 2: Convert to fraction form
20,138,310.30/30,207,465.45 = 5,762,235.90/x - Step 3: Cross multiply
20,138,310.30x = 30,207,465.45 × 5,762,235.90 - Step 4: Simplify right side
20,138,310.30x = 174,062,541,863,999.66 - Step 5: Solve for x
x = 174,062,541,863,999.66/20,138,310.30 - Step 6: Final answer
x = 8,643,353.85
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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.