Finding the Fourth Proportional to 83,015.81, 124,573.13 and 30,428.99
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Solution
The fourth proportional to 83,015.81, 124,573.13 and 30,428.99 is: 45,661.60
Step by Step Solution
- Step 1: Write the proportion equation
83,015.81 : 124,573.13 = 30,428.99 : x - Step 2: Convert to fraction form
83,015.81/124,573.13 = 30,428.99/x - Step 3: Cross multiply
83,015.81x = 124,573.13 × 30,428.99 - Step 4: Simplify right side
83,015.81x = 3,790,634,374.89 - Step 5: Solve for x
x = 3,790,634,374.89/83,015.81 - Step 6: Final answer
x = 45,661.60
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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.