Finding the Fourth Proportional to 75,357.12, 103,988.16 and 43,520.88
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Solution
The fourth proportional to 75,357.12, 103,988.16 and 43,520.88 is: 60,056.12
Step by Step Solution
- Step 1: Write the proportion equation
75,357.12 : 103,988.16 = 43,520.88 : x - Step 2: Convert to fraction form
75,357.12/103,988.16 = 43,520.88/x - Step 3: Cross multiply
75,357.12x = 103,988.16 × 43,520.88 - Step 4: Simplify right side
75,357.12x = 4,525,656,232.78 - Step 5: Solve for x
x = 4,525,656,232.78/75,357.12 - Step 6: Final answer
x = 60,056.12
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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.