Finding the Fourth Proportional to 77,147.12, 115,720.95 and 27,200.09
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Solution
The fourth proportional to 77,147.12, 115,720.95 and 27,200.09 is: 40,800.23
Step by Step Solution
- Step 1: Write the proportion equation
77,147.12 : 115,720.95 = 27,200.09 : x - Step 2: Convert to fraction form
77,147.12/115,720.95 = 27,200.09/x - Step 3: Cross multiply
77,147.12x = 115,720.95 × 27,200.09 - Step 4: Simplify right side
77,147.12x = 3,147,619,676.28 - Step 5: Solve for x
x = 3,147,619,676.28/77,147.12 - Step 6: Final answer
x = 40,800.23
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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.