Finding the Fourth Proportional to 83,679.20, 125,518.80 and 48,708.80
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Solution
The fourth proportional to 83,679.20, 125,518.80 and 48,708.80 is: 73,063.20
Step by Step Solution
- Step 1: Write the proportion equation
83,679.20 : 125,518.80 = 48,708.80 : x - Step 2: Convert to fraction form
83,679.20/125,518.80 = 48,708.80/x - Step 3: Cross multiply
83,679.20x = 125,518.80 × 48,708.80 - Step 4: Simplify right side
83,679.20x = 6,113,870,125.44 - Step 5: Solve for x
x = 6,113,870,125.44/83,679.20 - Step 6: Final answer
x = 73,063.20
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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.