Finding the Fourth Proportional to 86,901.75, 119,924.42 and 47,157.75
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Solution
The fourth proportional to 86,901.75, 119,924.42 and 47,157.75 is: 65,077.70
Step by Step Solution
- Step 1: Write the proportion equation
86,901.75 : 119,924.42 = 47,157.75 : x - Step 2: Convert to fraction form
86,901.75/119,924.42 = 47,157.75/x - Step 3: Cross multiply
86,901.75x = 119,924.42 × 47,157.75 - Step 4: Simplify right side
86,901.75x = 5,655,365,581.47 - Step 5: Solve for x
x = 5,655,365,581.47/86,901.75 - Step 6: Final answer
x = 65,077.70
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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.