Finding the Fourth Proportional to 98,520.38, 135,958.28 and 56,078.91
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Solution
The fourth proportional to 98,520.38, 135,958.28 and 56,078.91 is: 77,388.99
Step by Step Solution
- Step 1: Write the proportion equation
98,520.38 : 135,958.28 = 56,078.91 : x - Step 2: Convert to fraction form
98,520.38/135,958.28 = 56,078.91/x - Step 3: Cross multiply
98,520.38x = 135,958.28 × 56,078.91 - Step 4: Simplify right side
98,520.38x = 7,624,391,867.48 - Step 5: Solve for x
x = 7,624,391,867.48/98,520.38 - Step 6: Final answer
x = 77,388.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.