Finding the Fourth Proportional to 79,131,986.20, 118,697,979.30 and 58,724,651.80
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Solution
The fourth proportional to 79,131,986.20, 118,697,979.30 and 58,724,651.80 is: 88,086,977.70
Step by Step Solution
- Step 1: Write the proportion equation
79,131,986.20 : 118,697,979.30 = 58,724,651.80 : x - Step 2: Convert to fraction form
79,131,986.20/118,697,979.30 = 58,724,651.80/x - Step 3: Cross multiply
79,131,986.20x = 118,697,979.30 × 58,724,651.80 - Step 4: Simplify right side
79,131,986.20x = 6,970,497,503,756,107 - Step 5: Solve for x
x = 6,970,497,503,756,107/79,131,986.20 - Step 6: Final answer
x = 88,086,977.70
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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.