Finding the Fourth Proportional to 77,067.99, 115,604.36 and 20,907.88
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Solution
The fourth proportional to 77,067.99, 115,604.36 and 20,907.88 is: 31,362.46
Step by Step Solution
- Step 1: Write the proportion equation
77,067.99 : 115,604.36 = 20,907.88 : x - Step 2: Convert to fraction form
77,067.99/115,604.36 = 20,907.88/x - Step 3: Cross multiply
77,067.99x = 115,604.36 × 20,907.88 - Step 4: Simplify right side
77,067.99x = 2,417,041,403.80 - Step 5: Solve for x
x = 2,417,041,403.80/77,067.99 - Step 6: Final answer
x = 31,362.46
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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.