Finding the Fourth Proportional to 85,474.40, 128,225.52 and 26,310.08
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Solution
The fourth proportional to 85,474.40, 128,225.52 and 26,310.08 is: 39,469.40
Step by Step Solution
- Step 1: Write the proportion equation
85,474.40 : 128,225.52 = 26,310.08 : x - Step 2: Convert to fraction form
85,474.40/128,225.52 = 26,310.08/x - Step 3: Cross multiply
85,474.40x = 128,225.52 × 26,310.08 - Step 4: Simplify right side
85,474.40x = 3,373,623,689.24 - Step 5: Solve for x
x = 3,373,623,689.24/85,474.40 - Step 6: Final answer
x = 39,469.40
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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.