Finding the Fourth Proportional to 78,369.09, 108,143.35 and 46,104.99
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Solution
The fourth proportional to 78,369.09, 108,143.35 and 46,104.99 is: 63,621.35
Step by Step Solution
- Step 1: Write the proportion equation
78,369.09 : 108,143.35 = 46,104.99 : x - Step 2: Convert to fraction form
78,369.09/108,143.35 = 46,104.99/x - Step 3: Cross multiply
78,369.09x = 108,143.35 × 46,104.99 - Step 4: Simplify right side
78,369.09x = 4,985,947,299.07 - Step 5: Solve for x
x = 4,985,947,299.07/78,369.09 - Step 6: Final answer
x = 63,621.35
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1.5x scale
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.