Finding the Fourth Proportional to 77,069.49, 115,606.29 and 27,138.23
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Solution
The fourth proportional to 77,069.49, 115,606.29 and 27,138.23 is: 40,708.07
Step by Step Solution
- Step 1: Write the proportion equation
77,069.49 : 115,606.29 = 27,138.23 : x - Step 2: Convert to fraction form
77,069.49/115,606.29 = 27,138.23/x - Step 3: Cross multiply
77,069.49x = 115,606.29 × 27,138.23 - Step 4: Simplify right side
77,069.49x = 3,137,350,087.47 - Step 5: Solve for x
x = 3,137,350,087.47/77,069.49 - Step 6: Final answer
x = 40,708.07
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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.