Finding the Fourth Proportional to 98,143.88, 135,438.56 and 53,431.88
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Solution
The fourth proportional to 98,143.88, 135,438.56 and 53,431.88 is: 73,735.99
Step by Step Solution
- Step 1: Write the proportion equation
98,143.88 : 135,438.56 = 53,431.88 : x - Step 2: Convert to fraction form
98,143.88/135,438.56 = 53,431.88/x - Step 3: Cross multiply
98,143.88x = 135,438.56 × 53,431.88 - Step 4: Simplify right side
98,143.88x = 7,236,735,940.94 - Step 5: Solve for x
x = 7,236,735,940.94/98,143.88 - Step 6: Final answer
x = 73,735.99
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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.