Finding the Fourth Proportional to 76,511.80, 114,767.70 and 68,201.20
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Solution
The fourth proportional to 76,511.80, 114,767.70 and 68,201.20 is: 102,301.80
Step by Step Solution
- Step 1: Write the proportion equation
76,511.80 : 114,767.70 = 68,201.20 : x - Step 2: Convert to fraction form
76,511.80/114,767.70 = 68,201.20/x - Step 3: Cross multiply
76,511.80x = 114,767.70 × 68,201.20 - Step 4: Simplify right side
76,511.80x = 7,827,294,861.24 - Step 5: Solve for x
x = 7,827,294,861.24/76,511.80 - Step 6: Final answer
x = 102,301.80
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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.