Finding the Fourth Proportional to 42,497,578.70, 63,746,368.05 and 13,746,620.60
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Solution
The fourth proportional to 42,497,578.70, 63,746,368.05 and 13,746,620.60 is: 20,619,930.90
Step by Step Solution
- Step 1: Write the proportion equation
42,497,578.70 : 63,746,368.05 = 13,746,620.60 : x - Step 2: Convert to fraction form
42,497,578.70/63,746,368.05 = 13,746,620.60/x - Step 3: Cross multiply
42,497,578.70x = 63,746,368.05 × 13,746,620.60 - Step 4: Simplify right side
42,497,578.70x = 876,297,136,211,311.75 - Step 5: Solve for x
x = 876,297,136,211,311.75/42,497,578.70 - Step 6: Final answer
x = 20,619,930.90
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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.