Finding the Fourth Proportional to 68,438.52, 102,790.08 and 56,755.08
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Solution
The fourth proportional to 68,438.52, 102,790.08 and 56,755.08 is: 85,242.33
Step by Step Solution
- Step 1: Write the proportion equation
68,438.52 : 102,790.08 = 56,755.08 : x - Step 2: Convert to fraction form
68,438.52/102,790.08 = 56,755.08/x - Step 3: Cross multiply
68,438.52x = 102,790.08 × 56,755.08 - Step 4: Simplify right side
68,438.52x = 5,833,859,213.61 - Step 5: Solve for x
x = 5,833,859,213.61/68,438.52 - Step 6: Final answer
x = 85,242.33
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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.