Finding the Fourth Proportional to 76,990.80, 115,464.60 and 24,416.40
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Solution
The fourth proportional to 76,990.80, 115,464.60 and 24,416.40 is: 36,617.75
Step by Step Solution
- Step 1: Write the proportion equation
76,990.80 : 115,464.60 = 24,416.40 : x - Step 2: Convert to fraction form
76,990.80/115,464.60 = 24,416.40/x - Step 3: Cross multiply
76,990.80x = 115,464.60 × 24,416.40 - Step 4: Simplify right side
76,990.80x = 2,819,229,859.44 - Step 5: Solve for x
x = 2,819,229,859.44/76,990.80 - Step 6: Final answer
x = 36,617.75
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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.