Finding the Fourth Proportional to 68,489.09, 102,703.34 and 31,047.65
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Solution
The fourth proportional to 68,489.09, 102,703.34 and 31,047.65 is: 46,557.75
Step by Step Solution
- Step 1: Write the proportion equation
68,489.09 : 102,703.34 = 31,047.65 : x - Step 2: Convert to fraction form
68,489.09/102,703.34 = 31,047.65/x - Step 3: Cross multiply
68,489.09x = 102,703.34 × 31,047.65 - Step 4: Simplify right side
68,489.09x = 3,188,697,881.10 - Step 5: Solve for x
x = 3,188,697,881.10/68,489.09 - Step 6: Final answer
x = 46,557.75
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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.