Finding the Fourth Proportional to 90,430.96, 135,602.68 and 31,245.88
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Solution
The fourth proportional to 90,430.96, 135,602.68 and 31,245.88 is: 46,853.70
Step by Step Solution
- Step 1: Write the proportion equation
90,430.96 : 135,602.68 = 31,245.88 : x - Step 2: Convert to fraction form
90,430.96/135,602.68 = 31,245.88/x - Step 3: Cross multiply
90,430.96x = 135,602.68 × 31,245.88 - Step 4: Simplify right side
90,430.96x = 4,237,025,066.96 - Step 5: Solve for x
x = 4,237,025,066.96/90,430.96 - Step 6: Final answer
x = 46,853.70
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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.