Finding the Fourth Proportional to 72,477.67, 108,711.64 and 19,882.75
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Solution
The fourth proportional to 72,477.67, 108,711.64 and 19,882.75 is: 29,822.79
Step by Step Solution
- Step 1: Write the proportion equation
72,477.67 : 108,711.64 = 19,882.75 : x - Step 2: Convert to fraction form
72,477.67/108,711.64 = 19,882.75/x - Step 3: Cross multiply
72,477.67x = 108,711.64 × 19,882.75 - Step 4: Simplify right side
72,477.67x = 2,161,486,360.21 - Step 5: Solve for x
x = 2,161,486,360.21/72,477.67 - Step 6: Final answer
x = 29,822.79
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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.