Finding the Fourth Proportional to 68,542.20, 102,813.30 and 65,917.80
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Solution
The fourth proportional to 68,542.20, 102,813.30 and 65,917.80 is: 98,876.70
Step by Step Solution
- Step 1: Write the proportion equation
68,542.20 : 102,813.30 = 65,917.80 : x - Step 2: Convert to fraction form
68,542.20/102,813.30 = 65,917.80/x - Step 3: Cross multiply
68,542.20x = 102,813.30 × 65,917.80 - Step 4: Simplify right side
68,542.20x = 6,777,226,546.74 - Step 5: Solve for x
x = 6,777,226,546.74/68,542.20 - Step 6: Final answer
x = 98,876.70
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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.