Finding the Fourth Proportional to 84,637.23, 126,972.44 and 31,329.67
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Solution
The fourth proportional to 84,637.23, 126,972.44 and 31,329.67 is: 47,000.65
Step by Step Solution
- Step 1: Write the proportion equation
84,637.23 : 126,972.44 = 31,329.67 : x - Step 2: Convert to fraction form
84,637.23/126,972.44 = 31,329.67/x - Step 3: Cross multiply
84,637.23x = 126,972.44 × 31,329.67 - Step 4: Simplify right side
84,637.23x = 3,978,004,603.07 - Step 5: Solve for x
x = 3,978,004,603.07/84,637.23 - Step 6: Final answer
x = 47,000.65
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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.