Finding the Fourth Proportional to 77,128.97, 115,672.69 and 27,202.58
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Solution
The fourth proportional to 77,128.97, 115,672.69 and 27,202.58 is: 40,796.55
Step by Step Solution
- Step 1: Write the proportion equation
77,128.97 : 115,672.69 = 27,202.58 : x - Step 2: Convert to fraction form
77,128.97/115,672.69 = 27,202.58/x - Step 3: Cross multiply
77,128.97x = 115,672.69 × 27,202.58 - Step 4: Simplify right side
77,128.97x = 3,146,596,143.61 - Step 5: Solve for x
x = 3,146,596,143.61/77,128.97 - Step 6: Final answer
x = 40,796.55
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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.