Finding the Fourth Proportional to 105,236.36, 145,223.80 and 57,489.92
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Solution
The fourth proportional to 105,236.36, 145,223.80 and 57,489.92 is: 79,334.79
Step by Step Solution
- Step 1: Write the proportion equation
105,236.36 : 145,223.80 = 57,489.92 : x - Step 2: Convert to fraction form
105,236.36/145,223.80 = 57,489.92/x - Step 3: Cross multiply
105,236.36x = 145,223.80 × 57,489.92 - Step 4: Simplify right side
105,236.36x = 8,348,904,644.10 - Step 5: Solve for x
x = 8,348,904,644.10/105,236.36 - Step 6: Final answer
x = 79,334.79
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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.