Finding the Fourth Proportional to 115,478.87, 159,325.99 and 67,071.44
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Solution
The fourth proportional to 115,478.87, 159,325.99 and 67,071.44 is: 92,538.35
Step by Step Solution
- Step 1: Write the proportion equation
115,478.87 : 159,325.99 = 67,071.44 : x - Step 2: Convert to fraction form
115,478.87/159,325.99 = 67,071.44/x - Step 3: Cross multiply
115,478.87x = 159,325.99 × 67,071.44 - Step 4: Simplify right side
115,478.87x = 10,686,223,809.36 - Step 5: Solve for x
x = 10,686,223,809.36/115,478.87 - Step 6: Final answer
x = 92,538.35
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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.