Finding the Fourth Proportional to 78,825.09, 108,782.17 and 44,381.68
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Solution
The fourth proportional to 78,825.09, 108,782.17 and 44,381.68 is: 61,248.72
Step by Step Solution
- Step 1: Write the proportion equation
78,825.09 : 108,782.17 = 44,381.68 : x - Step 2: Convert to fraction form
78,825.09/108,782.17 = 44,381.68/x - Step 3: Cross multiply
78,825.09x = 108,782.17 × 44,381.68 - Step 4: Simplify right side
78,825.09x = 4,827,935,481.40 - Step 5: Solve for x
x = 4,827,935,481.40/78,825.09 - Step 6: Final answer
x = 61,248.72
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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.