Finding the Fourth Proportional to 38,860,491.75, 53,627,737.88 and 21,219,516.80
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Solution
The fourth proportional to 38,860,491.75, 53,627,737.88 and 21,219,516.80 is: 29,283,074.75
Step by Step Solution
- Step 1: Write the proportion equation
38,860,491.75 : 53,627,737.88 = 21,219,516.80 : x - Step 2: Convert to fraction form
38,860,491.75/53,627,737.88 = 21,219,516.80/x - Step 3: Cross multiply
38,860,491.75x = 53,627,737.88 × 21,219,516.80 - Step 4: Simplify right side
38,860,491.75x = 1,137,954,684,620,313.25 - Step 5: Solve for x
x = 1,137,954,684,620,313.25/38,860,491.75 - Step 6: Final answer
x = 29,283,074.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.