Finding the Fourth Proportional to 83,409.66, 115,113.60 and 47,605.09
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Solution
The fourth proportional to 83,409.66, 115,113.60 and 47,605.09 is: 65,699.74
Step by Step Solution
- Step 1: Write the proportion equation
83,409.66 : 115,113.60 = 47,605.09 : x - Step 2: Convert to fraction form
83,409.66/115,113.60 = 47,605.09/x - Step 3: Cross multiply
83,409.66x = 115,113.60 × 47,605.09 - Step 4: Simplify right side
83,409.66x = 5,479,993,288.22 - Step 5: Solve for x
x = 5,479,993,288.22/83,409.66 - Step 6: Final answer
x = 65,699.74
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.