Finding the Fourth Proportional to 77,067.18, 115,649.37 and 30,313.98
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Solution
The fourth proportional to 77,067.18, 115,649.37 and 30,313.98 is: 45,490.09
Step by Step Solution
- Step 1: Write the proportion equation
77,067.18 : 115,649.37 = 30,313.98 : x - Step 2: Convert to fraction form
77,067.18/115,649.37 = 30,313.98/x - Step 3: Cross multiply
77,067.18x = 115,649.37 × 30,313.98 - Step 4: Simplify right side
77,067.18x = 3,505,792,689.19 - Step 5: Solve for x
x = 3,505,792,689.19/77,067.18 - Step 6: Final answer
x = 45,490.09
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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.