Finding the Fourth Proportional to 74,643.26, 102,996.97 and 53,188.79
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Solution
The fourth proportional to 74,643.26, 102,996.97 and 53,188.79 is: 73,392.88
Step by Step Solution
- Step 1: Write the proportion equation
74,643.26 : 102,996.97 = 53,188.79 : x - Step 2: Convert to fraction form
74,643.26/102,996.97 = 53,188.79/x - Step 3: Cross multiply
74,643.26x = 102,996.97 × 53,188.79 - Step 4: Simplify right side
74,643.26x = 5,478,283,560.01 - Step 5: Solve for x
x = 5,478,283,560.01/74,643.26 - Step 6: Final answer
x = 73,392.88
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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.