Finding the Fourth Proportional to 80,877.09, 121,311.99 and 30,980.70
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Solution
The fourth proportional to 80,877.09, 121,311.99 and 30,980.70 is: 46,469.65
Step by Step Solution
- Step 1: Write the proportion equation
80,877.09 : 121,311.99 = 30,980.70 : x - Step 2: Convert to fraction form
80,877.09/121,311.99 = 30,980.70/x - Step 3: Cross multiply
80,877.09x = 121,311.99 × 30,980.70 - Step 4: Simplify right side
80,877.09x = 3,758,330,368.59 - Step 5: Solve for x
x = 3,758,330,368.59/80,877.09 - Step 6: Final answer
x = 46,469.65
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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.