Finding the Fourth Proportional to 68,916.09, 103,311.70 and 47,866.07
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Solution
The fourth proportional to 68,916.09, 103,311.70 and 47,866.07 is: 71,755.74
Step by Step Solution
- Step 1: Write the proportion equation
68,916.09 : 103,311.70 = 47,866.07 : x - Step 2: Convert to fraction form
68,916.09/103,311.70 = 47,866.07/x - Step 3: Cross multiply
68,916.09x = 103,311.70 × 47,866.07 - Step 4: Simplify right side
68,916.09x = 4,945,125,064.02 - Step 5: Solve for x
x = 4,945,125,064.02/68,916.09 - Step 6: Final answer
x = 71,755.74
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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.