Finding the Fourth Proportional to 75,351.12, 103,985.16 and 41,817.68
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Solution
The fourth proportional to 75,351.12, 103,985.16 and 41,817.68 is: 57,708.74
Step by Step Solution
- Step 1: Write the proportion equation
75,351.12 : 103,985.16 = 41,817.68 : x - Step 2: Convert to fraction form
75,351.12/103,985.16 = 41,817.68/x - Step 3: Cross multiply
75,351.12x = 103,985.16 × 41,817.68 - Step 4: Simplify right side
75,351.12x = 4,348,418,145.63 - Step 5: Solve for x
x = 4,348,418,145.63/75,351.12 - Step 6: Final answer
x = 57,708.74
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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.