Finding the Fourth Proportional to 91,143.60, 136,468.36 and 47,275.44
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Solution
The fourth proportional to 91,143.60, 136,468.36 and 47,275.44 is: 70,785.02
Step by Step Solution
- Step 1: Write the proportion equation
91,143.60 : 136,468.36 = 47,275.44 : x - Step 2: Convert to fraction form
91,143.60/136,468.36 = 47,275.44/x - Step 3: Cross multiply
91,143.60x = 136,468.36 × 47,275.44 - Step 4: Simplify right side
91,143.60x = 6,451,601,765.08 - Step 5: Solve for x
x = 6,451,601,765.08/91,143.60 - Step 6: Final answer
x = 70,785.02
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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.