Finding the Fourth Proportional to 78,789.18, 118,184.80 and 26,198.67
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Solution
The fourth proportional to 78,789.18, 118,184.80 and 26,198.67 is: 39,298.35
Step by Step Solution
- Step 1: Write the proportion equation
78,789.18 : 118,184.80 = 26,198.67 : x - Step 2: Convert to fraction form
78,789.18/118,184.80 = 26,198.67/x - Step 3: Cross multiply
78,789.18x = 118,184.80 × 26,198.67 - Step 4: Simplify right side
78,789.18x = 3,096,284,574.22 - Step 5: Solve for x
x = 3,096,284,574.22/78,789.18 - Step 6: Final answer
x = 39,298.35
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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.