Finding the Fourth Proportional to 90,474.08, 135,709.08 and 31,306.18
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Solution
The fourth proportional to 90,474.08, 135,709.08 and 31,306.18 is: 46,958.56
Step by Step Solution
- Step 1: Write the proportion equation
90,474.08 : 135,709.08 = 31,306.18 : x - Step 2: Convert to fraction form
90,474.08/135,709.08 = 31,306.18/x - Step 3: Cross multiply
90,474.08x = 135,709.08 × 31,306.18 - Step 4: Simplify right side
90,474.08x = 4,248,532,886.11 - Step 5: Solve for x
x = 4,248,532,886.11/90,474.08 - Step 6: Final answer
x = 46,958.56
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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.