Finding the Fourth Proportional to 90,748.92, 135,936.12 and 53,194.95
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Solution
The fourth proportional to 90,748.92, 135,936.12 and 53,194.95 is: 79,682.66
Step by Step Solution
- Step 1: Write the proportion equation
90,748.92 : 135,936.12 = 53,194.95 : x - Step 2: Convert to fraction form
90,748.92/135,936.12 = 53,194.95/x - Step 3: Cross multiply
90,748.92x = 135,936.12 × 53,194.95 - Step 4: Simplify right side
90,748.92x = 7,231,115,106.59 - Step 5: Solve for x
x = 7,231,115,106.59/90,748.92 - Step 6: Final answer
x = 79,682.66
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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.