Finding the Fourth Proportional to 77,969.36, 107,597.49 and 42,159.26
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Solution
The fourth proportional to 77,969.36, 107,597.49 and 42,159.26 is: 58,179.66
Step by Step Solution
- Step 1: Write the proportion equation
77,969.36 : 107,597.49 = 42,159.26 : x - Step 2: Convert to fraction form
77,969.36/107,597.49 = 42,159.26/x - Step 3: Cross multiply
77,969.36x = 107,597.49 × 42,159.26 - Step 4: Simplify right side
77,969.36x = 4,536,230,556.26 - Step 5: Solve for x
x = 4,536,230,556.26/77,969.36 - Step 6: Final answer
x = 58,179.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.