Finding the Fourth Proportional to 75,349.12, 103,982.40 and 41,815.68
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Solution
The fourth proportional to 75,349.12, 103,982.40 and 41,815.68 is: 57,705.98
Step by Step Solution
- Step 1: Write the proportion equation
75,349.12 : 103,982.40 = 41,815.68 : x - Step 2: Convert to fraction form
75,349.12/103,982.40 = 41,815.68/x - Step 3: Cross multiply
75,349.12x = 103,982.40 × 41,815.68 - Step 4: Simplify right side
75,349.12x = 4,348,094,764.03 - Step 5: Solve for x
x = 4,348,094,764.03/75,349.12 - Step 6: Final answer
x = 57,705.98
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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.