Finding the Fourth Proportional to 89,515.26, 134,013.69 and 67,421.70
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Solution
The fourth proportional to 89,515.26, 134,013.69 and 67,421.70 is: 100,937.32
Step by Step Solution
- Step 1: Write the proportion equation
89,515.26 : 134,013.69 = 67,421.70 : x - Step 2: Convert to fraction form
89,515.26/134,013.69 = 67,421.70/x - Step 3: Cross multiply
89,515.26x = 134,013.69 × 67,421.70 - Step 4: Simplify right side
89,515.26x = 9,035,430,803.07 - Step 5: Solve for x
x = 9,035,430,803.07/89,515.26 - Step 6: Final answer
x = 100,937.32
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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.