Finding the Fourth Proportional to 101,577.09, 140,129.84 and 65,778.63
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Solution
The fourth proportional to 101,577.09, 140,129.84 and 65,778.63 is: 90,744.37
Step by Step Solution
- Step 1: Write the proportion equation
101,577.09 : 140,129.84 = 65,778.63 : x - Step 2: Convert to fraction form
101,577.09/140,129.84 = 65,778.63/x - Step 3: Cross multiply
101,577.09x = 140,129.84 × 65,778.63 - Step 4: Simplify right side
101,577.09x = 9,217,548,568.43 - Step 5: Solve for x
x = 9,217,548,568.43/101,577.09 - Step 6: Final answer
x = 90,744.37
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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.