Finding the Fourth Proportional to 71,638,658.40, 98,863,996.32 and 40,704,097.44
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Solution
The fourth proportional to 71,638,658.40, 98,863,996.32 and 40,704,097.44 is: 56,173,158.87
Step by Step Solution
- Step 1: Write the proportion equation
71,638,658.40 : 98,863,996.32 = 40,704,097.44 : x - Step 2: Convert to fraction form
71,638,658.40/98,863,996.32 = 40,704,097.44/x - Step 3: Cross multiply
71,638,658.40x = 98,863,996.32 × 40,704,097.44 - Step 4: Simplify right side
71,638,658.40x = 4,024,169,739,517,081 - Step 5: Solve for x
x = 4,024,169,739,517,081/71,638,658.40 - Step 6: Final answer
x = 56,173,158.87
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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.