Finding the Fourth Proportional to 71,551.51, 107,334.61 and 18,960.99
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Solution
The fourth proportional to 71,551.51, 107,334.61 and 18,960.99 is: 28,443.43
Step by Step Solution
- Step 1: Write the proportion equation
71,551.51 : 107,334.61 = 18,960.99 : x - Step 2: Convert to fraction form
71,551.51/107,334.61 = 18,960.99/x - Step 3: Cross multiply
71,551.51x = 107,334.61 × 18,960.99 - Step 4: Simplify right side
71,551.51x = 2,035,170,466.86 - Step 5: Solve for x
x = 2,035,170,466.86/71,551.51 - Step 6: Final answer
x = 28,443.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.