Finding the Fourth Proportional to 42,057.18, 58,019.76 and 27,919.44
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Solution
The fourth proportional to 42,057.18, 58,019.76 and 27,919.44 is: 38,516.12
Step by Step Solution
- Step 1: Write the proportion equation
42,057.18 : 58,019.76 = 27,919.44 : x - Step 2: Convert to fraction form
42,057.18/58,019.76 = 27,919.44/x - Step 3: Cross multiply
42,057.18x = 58,019.76 × 27,919.44 - Step 4: Simplify right side
42,057.18x = 1,619,879,208.13 - Step 5: Solve for x
x = 1,619,879,208.13/42,057.18 - Step 6: Final answer
x = 38,516.12
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.