Finding the Fourth Proportional to 78,325.56, 117,487.80 and 19,162.08
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Solution
The fourth proportional to 78,325.56, 117,487.80 and 19,162.08 is: 28,742.99
Step by Step Solution
- Step 1: Write the proportion equation
78,325.56 : 117,487.80 = 19,162.08 : x - Step 2: Convert to fraction form
78,325.56/117,487.80 = 19,162.08/x - Step 3: Cross multiply
78,325.56x = 117,487.80 × 19,162.08 - Step 4: Simplify right side
78,325.56x = 2,251,310,622.62 - Step 5: Solve for x
x = 2,251,310,622.62/78,325.56 - Step 6: Final answer
x = 28,742.99
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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.