Finding the Fourth Proportional to 76,902.29, 106,125.48 and 42,912.26
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Solution
The fourth proportional to 76,902.29, 106,125.48 and 42,912.26 is: 59,219.09
Step by Step Solution
- Step 1: Write the proportion equation
76,902.29 : 106,125.48 = 42,912.26 : x - Step 2: Convert to fraction form
76,902.29/106,125.48 = 42,912.26/x - Step 3: Cross multiply
76,902.29x = 106,125.48 × 42,912.26 - Step 4: Simplify right side
76,902.29x = 4,554,083,659.76 - Step 5: Solve for x
x = 4,554,083,659.76/76,902.29 - Step 6: Final answer
x = 59,219.09
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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.