Finding the Fourth Proportional to 71,432.41, 107,138.08 and 18,845.59
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Solution
The fourth proportional to 71,432.41, 107,138.08 and 18,845.59 is: 28,265.61
Step by Step Solution
- Step 1: Write the proportion equation
71,432.41 : 107,138.08 = 18,845.59 : x - Step 2: Convert to fraction form
71,432.41/107,138.08 = 18,845.59/x - Step 3: Cross multiply
71,432.41x = 107,138.08 × 18,845.59 - Step 4: Simplify right side
71,432.41x = 2,019,080,329.07 - Step 5: Solve for x
x = 2,019,080,329.07/71,432.41 - Step 6: Final answer
x = 28,265.61
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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.