Finding the Fourth Proportional to 76,919.80, 115,367.70 and 24,342.20
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Solution
The fourth proportional to 76,919.80, 115,367.70 and 24,342.20 is: 36,509.50
Step by Step Solution
- Step 1: Write the proportion equation
76,919.80 : 115,367.70 = 24,342.20 : x - Step 2: Convert to fraction form
76,919.80/115,367.70 = 24,342.20/x - Step 3: Cross multiply
76,919.80x = 115,367.70 × 24,342.20 - Step 4: Simplify right side
76,919.80x = 2,808,303,626.94 - Step 5: Solve for x
x = 2,808,303,626.94/76,919.80 - Step 6: Final answer
x = 36,509.50
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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.