Finding the Fourth Proportional to 76,572.27, 114,863.87 and 20,412.09
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Solution
The fourth proportional to 76,572.27, 114,863.87 and 20,412.09 is: 30,619.59
Step by Step Solution
- Step 1: Write the proportion equation
76,572.27 : 114,863.87 = 20,412.09 : x - Step 2: Convert to fraction form
76,572.27/114,863.87 = 20,412.09/x - Step 3: Cross multiply
76,572.27x = 114,863.87 × 20,412.09 - Step 4: Simplify right side
76,572.27x = 2,344,611,652.19 - Step 5: Solve for x
x = 2,344,611,652.19/76,572.27 - Step 6: Final answer
x = 30,619.59
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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.