Finding the Fourth Proportional to 77,138.19, 115,691.09 and 29,736.99
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Solution
The fourth proportional to 77,138.19, 115,691.09 and 29,736.99 is: 44,599.24
Step by Step Solution
- Step 1: Write the proportion equation
77,138.19 : 115,691.09 = 29,736.99 : x - Step 2: Convert to fraction form
77,138.19/115,691.09 = 29,736.99/x - Step 3: Cross multiply
77,138.19x = 115,691.09 × 29,736.99 - Step 4: Simplify right side
77,138.19x = 3,440,304,637.73 - Step 5: Solve for x
x = 3,440,304,637.73/77,138.19 - Step 6: Final answer
x = 44,599.24
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1.5x scale
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.