Finding the Fourth Proportional to 76,542.70, 105,664.80 and 51,092.06
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Solution
The fourth proportional to 76,542.70, 105,664.80 and 51,092.06 is: 70,530.99
Step by Step Solution
- Step 1: Write the proportion equation
76,542.70 : 105,664.80 = 51,092.06 : x - Step 2: Convert to fraction form
76,542.70/105,664.80 = 51,092.06/x - Step 3: Cross multiply
76,542.70x = 105,664.80 × 51,092.06 - Step 4: Simplify right side
76,542.70x = 5,398,632,301.49 - Step 5: Solve for x
x = 5,398,632,301.49/76,542.70 - Step 6: Final answer
x = 70,530.99
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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.