Finding the Fourth Proportional to 80,838.39, 111,558.93 and 45,028.99
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Solution
The fourth proportional to 80,838.39, 111,558.93 and 45,028.99 is: 62,141.09
Step by Step Solution
- Step 1: Write the proportion equation
80,838.39 : 111,558.93 = 45,028.99 : x - Step 2: Convert to fraction form
80,838.39/111,558.93 = 45,028.99/x - Step 3: Cross multiply
80,838.39x = 111,558.93 × 45,028.99 - Step 4: Simplify right side
80,838.39x = 5,023,385,385.59 - Step 5: Solve for x
x = 5,023,385,385.59/80,838.39 - Step 6: Final answer
x = 62,141.09
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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.