Finding the Fourth Proportional to 85,743.46, 128,614.02 and 26,579.12
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Solution
The fourth proportional to 85,743.46, 128,614.02 and 26,579.12 is: 39,868.32
Step by Step Solution
- Step 1: Write the proportion equation
85,743.46 : 128,614.02 = 26,579.12 : x - Step 2: Convert to fraction form
85,743.46/128,614.02 = 26,579.12/x - Step 3: Cross multiply
85,743.46x = 128,614.02 × 26,579.12 - Step 4: Simplify right side
85,743.46x = 3,418,447,471.26 - Step 5: Solve for x
x = 3,418,447,471.26/85,743.46 - Step 6: Final answer
x = 39,868.32
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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.