Finding the Fourth Proportional to 78,155.23, 107,842.03 and 46,318.99
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Solution
The fourth proportional to 78,155.23, 107,842.03 and 46,318.99 is: 63,912.98
Step by Step Solution
- Step 1: Write the proportion equation
78,155.23 : 107,842.03 = 46,318.99 : x - Step 2: Convert to fraction form
78,155.23/107,842.03 = 46,318.99/x - Step 3: Cross multiply
78,155.23x = 107,842.03 × 46,318.99 - Step 4: Simplify right side
78,155.23x = 4,995,133,909.15 - Step 5: Solve for x
x = 4,995,133,909.15/78,155.23 - Step 6: Final answer
x = 63,912.98
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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.