Finding the Fourth Proportional to 87,259.68, 130,591.44 and 53,965.44
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Solution
The fourth proportional to 87,259.68, 130,591.44 and 53,965.44 is: 80,763.81
Step by Step Solution
- Step 1: Write the proportion equation
87,259.68 : 130,591.44 = 53,965.44 : x - Step 2: Convert to fraction form
87,259.68/130,591.44 = 53,965.44/x - Step 3: Cross multiply
87,259.68x = 130,591.44 × 53,965.44 - Step 4: Simplify right side
87,259.68x = 7,047,424,519.83 - Step 5: Solve for x
x = 7,047,424,519.83/87,259.68 - Step 6: Final answer
x = 80,763.81
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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.