Finding the Fourth Proportional to 75,691.75, 104,454.63 and 42,157.75
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Solution
The fourth proportional to 75,691.75, 104,454.63 and 42,157.75 is: 58,177.70
Step by Step Solution
- Step 1: Write the proportion equation
75,691.75 : 104,454.63 = 42,157.75 : x - Step 2: Convert to fraction form
75,691.75/104,454.63 = 42,157.75/x - Step 3: Cross multiply
75,691.75x = 104,454.63 × 42,157.75 - Step 4: Simplify right side
75,691.75x = 4,403,572,177.88 - Step 5: Solve for x
x = 4,403,572,177.88/75,691.75 - Step 6: Final answer
x = 58,177.70
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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.