Finding the Fourth Proportional to 90,315.62, 135,479.64 and 27,133.10
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Solution
The fourth proportional to 90,315.62, 135,479.64 and 27,133.10 is: 40,701.52
Step by Step Solution
- Step 1: Write the proportion equation
90,315.62 : 135,479.64 = 27,133.10 : x - Step 2: Convert to fraction form
90,315.62/135,479.64 = 27,133.10/x - Step 3: Cross multiply
90,315.62x = 135,479.64 × 27,133.10 - Step 4: Simplify right side
90,315.62x = 3,675,982,620.08 - Step 5: Solve for x
x = 3,675,982,620.08/90,315.62 - Step 6: Final answer
x = 40,701.52
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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.