Finding the Fourth Proportional to 85,759.11, 128,651.12 and 26,599.54
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Solution
The fourth proportional to 85,759.11, 128,651.12 and 26,599.54 is: 39,903.17
Step by Step Solution
- Step 1: Write the proportion equation
85,759.11 : 128,651.12 = 26,599.54 : x - Step 2: Convert to fraction form
85,759.11/128,651.12 = 26,599.54/x - Step 3: Cross multiply
85,759.11x = 128,651.12 × 26,599.54 - Step 4: Simplify right side
85,759.11x = 3,422,060,612.48 - Step 5: Solve for x
x = 3,422,060,612.48/85,759.11 - Step 6: Final answer
x = 39,903.17
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1.5x scale
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.