Finding the Fourth Proportional to 90,348.92, 135,446.99 and 56,995.65
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Solution
The fourth proportional to 90,348.92, 135,446.99 and 56,995.65 is: 85,445.28
Step by Step Solution
- Step 1: Write the proportion equation
90,348.92 : 135,446.99 = 56,995.65 : x - Step 2: Convert to fraction form
90,348.92/135,446.99 = 56,995.65/x - Step 3: Cross multiply
90,348.92x = 135,446.99 × 56,995.65 - Step 4: Simplify right side
90,348.92x = 7,719,888,950.62 - Step 5: Solve for x
x = 7,719,888,950.62/90,348.92 - Step 6: Final answer
x = 85,445.28
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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.