Finding the Fourth Proportional to 106,289.21, 159,378.45 and 39,674.56
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Solution
The fourth proportional to 106,289.21, 159,378.45 and 39,674.56 is: 59,491.17
Step by Step Solution
- Step 1: Write the proportion equation
106,289.21 : 159,378.45 = 39,674.56 : x - Step 2: Convert to fraction form
106,289.21/159,378.45 = 39,674.56/x - Step 3: Cross multiply
106,289.21x = 159,378.45 × 39,674.56 - Step 4: Simplify right side
106,289.21x = 6,323,269,877.23 - Step 5: Solve for x
x = 6,323,269,877.23/106,289.21 - Step 6: Final answer
x = 59,491.17
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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.