Finding the Fourth Proportional to 81,292.23, 121,780.53 and 59,906.09
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Solution
The fourth proportional to 81,292.23, 121,780.53 and 59,906.09 is: 89,742.84
Step by Step Solution
- Step 1: Write the proportion equation
81,292.23 : 121,780.53 = 59,906.09 : x - Step 2: Convert to fraction form
81,292.23/121,780.53 = 59,906.09/x - Step 3: Cross multiply
81,292.23x = 121,780.53 × 59,906.09 - Step 4: Simplify right side
81,292.23x = 7,295,395,694.88 - Step 5: Solve for x
x = 7,295,395,694.88/81,292.23 - Step 6: Final answer
x = 89,742.84
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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.