Finding the Fourth Proportional to 76,400.14, 105,419.86 and 44,129.63
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Solution
The fourth proportional to 76,400.14, 105,419.86 and 44,129.63 is: 60,891.76
Step by Step Solution
- Step 1: Write the proportion equation
76,400.14 : 105,419.86 = 44,129.63 : x - Step 2: Convert to fraction form
76,400.14/105,419.86 = 44,129.63/x - Step 3: Cross multiply
76,400.14x = 105,419.86 × 44,129.63 - Step 4: Simplify right side
76,400.14x = 4,652,138,779.03 - Step 5: Solve for x
x = 4,652,138,779.03/76,400.14 - Step 6: Final answer
x = 60,891.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.