Finding the Fourth Proportional to 76,776.80, 115,157.64 and 26,847.68
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Solution
The fourth proportional to 76,776.80, 115,157.64 and 26,847.68 is: 40,268.88
Step by Step Solution
- Step 1: Write the proportion equation
76,776.80 : 115,157.64 = 26,847.68 : x - Step 2: Convert to fraction form
76,776.80/115,157.64 = 26,847.68/x - Step 3: Cross multiply
76,776.80x = 115,157.64 × 26,847.68 - Step 4: Simplify right side
76,776.80x = 3,091,715,468.28 - Step 5: Solve for x
x = 3,091,715,468.28/76,776.80 - Step 6: Final answer
x = 40,268.88
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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.