Finding the Fourth Proportional to 103,428.70, 155,143.05 and 44,379.70
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Solution
The fourth proportional to 103,428.70, 155,143.05 and 44,379.70 is: 66,569.55
Step by Step Solution
- Step 1: Write the proportion equation
103,428.70 : 155,143.05 = 44,379.70 : x - Step 2: Convert to fraction form
103,428.70/155,143.05 = 44,379.70/x - Step 3: Cross multiply
103,428.70x = 155,143.05 × 44,379.70 - Step 4: Simplify right side
103,428.70x = 6,885,202,016.09 - Step 5: Solve for x
x = 6,885,202,016.09/103,428.70 - Step 6: Final answer
x = 66,569.55
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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.