Finding the Fourth Proportional to 81,660.13, 122,536.97 and 31,733.75
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Solution
The fourth proportional to 81,660.13, 122,536.97 and 31,733.75 is: 47,618.81
Step by Step Solution
- Step 1: Write the proportion equation
81,660.13 : 122,536.97 = 31,733.75 : x - Step 2: Convert to fraction form
81,660.13/122,536.97 = 31,733.75/x - Step 3: Cross multiply
81,660.13x = 122,536.97 × 31,733.75 - Step 4: Simplify right side
81,660.13x = 3,888,557,838.41 - Step 5: Solve for x
x = 3,888,557,838.41/81,660.13 - Step 6: Final answer
x = 47,618.81
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.