Finding the Fourth Proportional to 77,139.05, 115,708.86 and 27,191.88
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Solution
The fourth proportional to 77,139.05, 115,708.86 and 27,191.88 is: 40,787.92
Step by Step Solution
- Step 1: Write the proportion equation
77,139.05 : 115,708.86 = 27,191.88 : x - Step 2: Convert to fraction form
77,139.05/115,708.86 = 27,191.88/x - Step 3: Cross multiply
77,139.05x = 115,708.86 × 27,191.88 - Step 4: Simplify right side
77,139.05x = 3,146,341,436.06 - Step 5: Solve for x
x = 3,146,341,436.06/77,139.05 - Step 6: Final answer
x = 40,787.92
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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.