Finding the Fourth Proportional to 90,306.14, 135,468.12 and 31,134.02
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Solution
The fourth proportional to 90,306.14, 135,468.12 and 31,134.02 is: 46,704.10
Step by Step Solution
- Step 1: Write the proportion equation
90,306.14 : 135,468.12 = 31,134.02 : x - Step 2: Convert to fraction form
90,306.14/135,468.12 = 31,134.02/x - Step 3: Cross multiply
90,306.14x = 135,468.12 × 31,134.02 - Step 4: Simplify right side
90,306.14x = 4,217,667,157.44 - Step 5: Solve for x
x = 4,217,667,157.44/90,306.14 - Step 6: Final answer
x = 46,704.10
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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.