Finding the Fourth Proportional to 85,640.49, 128,462.36 and 23,310.99
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Solution
The fourth proportional to 85,640.49, 128,462.36 and 23,310.99 is: 34,966.93
Step by Step Solution
- Step 1: Write the proportion equation
85,640.49 : 128,462.36 = 23,310.99 : x - Step 2: Convert to fraction form
85,640.49/128,462.36 = 23,310.99/x - Step 3: Cross multiply
85,640.49x = 128,462.36 × 23,310.99 - Step 4: Simplify right side
85,640.49x = 2,994,584,672.78 - Step 5: Solve for x
x = 2,994,584,672.78/85,640.49 - Step 6: Final answer
x = 34,966.93
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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.