Finding the Fourth Proportional to 76,742.12, 115,074.56 and 44,731.48
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Solution
The fourth proportional to 76,742.12, 115,074.56 and 44,731.48 is: 67,074.71
Step by Step Solution
- Step 1: Write the proportion equation
76,742.12 : 115,074.56 = 44,731.48 : x - Step 2: Convert to fraction form
76,742.12/115,074.56 = 44,731.48/x - Step 3: Cross multiply
76,742.12x = 115,074.56 × 44,731.48 - Step 4: Simplify right side
76,742.12x = 5,147,455,379.15 - Step 5: Solve for x
x = 5,147,455,379.15/76,742.12 - Step 6: Final answer
x = 67,074.71
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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.