Finding the Fourth Proportional to 71,220.36, 106,791.10 and 29,130.00
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Solution
The fourth proportional to 71,220.36, 106,791.10 and 29,130.00 is: 43,678.86
Step by Step Solution
- Step 1: Write the proportion equation
71,220.36 : 106,791.10 = 29,130.00 : x - Step 2: Convert to fraction form
71,220.36/106,791.10 = 29,130.00/x - Step 3: Cross multiply
71,220.36x = 106,791.10 × 29,130.00 - Step 4: Simplify right side
71,220.36x = 3,110,824,200.59 - Step 5: Solve for x
x = 3,110,824,200.59/71,220.36 - Step 6: Final answer
x = 43,678.86
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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.