Finding the Fourth Proportional to 78,701,207.70, 118,051,811.55 and 40,437,455.70
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Solution
The fourth proportional to 78,701,207.70, 118,051,811.55 and 40,437,455.70 is: 60,656,183.55
Step by Step Solution
- Step 1: Write the proportion equation
78,701,207.70 : 118,051,811.55 = 40,437,455.70 : x - Step 2: Convert to fraction form
78,701,207.70/118,051,811.55 = 40,437,455.70/x - Step 3: Cross multiply
78,701,207.70x = 118,051,811.55 × 40,437,455.70 - Step 4: Simplify right side
78,701,207.70x = 4,773,714,899,857,874 - Step 5: Solve for x
x = 4,773,714,899,857,874/78,701,207.70 - Step 6: Final answer
x = 60,656,183.55
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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.