Finding the Fourth Proportional to 53,310,478.62, 79,965,718.83 and 12,920,962.62
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Solution
The fourth proportional to 53,310,478.62, 79,965,718.83 and 12,920,962.62 is: 19,381,444.15
Step by Step Solution
- Step 1: Write the proportion equation
53,310,478.62 : 79,965,718.83 = 12,920,962.62 : x - Step 2: Convert to fraction form
53,310,478.62/79,965,718.83 = 12,920,962.62/x - Step 3: Cross multiply
53,310,478.62x = 79,965,718.83 × 12,920,962.62 - Step 4: Simplify right side
53,310,478.62x = 1,033,234,063,883,860 - Step 5: Solve for x
x = 1,033,234,063,883,860/53,310,478.62 - Step 6: Final answer
x = 19,381,444.15
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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.