Finding the Fourth Proportional to 76,890.40, 115,324.80 and 24,305.20
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Solution
The fourth proportional to 76,890.40, 115,324.80 and 24,305.20 is: 36,454.39
Step by Step Solution
- Step 1: Write the proportion equation
76,890.40 : 115,324.80 = 24,305.20 : x - Step 2: Convert to fraction form
76,890.40/115,324.80 = 24,305.20/x - Step 3: Cross multiply
76,890.40x = 115,324.80 × 24,305.20 - Step 4: Simplify right side
76,890.40x = 2,802,992,328.96 - Step 5: Solve for x
x = 2,802,992,328.96/76,890.40 - Step 6: Final answer
x = 36,454.39
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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.