Finding the Fourth Proportional to 81,484.48, 122,289.28 and 36,519.68
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Solution
The fourth proportional to 81,484.48, 122,289.28 and 36,519.68 is: 54,807.56
Step by Step Solution
- Step 1: Write the proportion equation
81,484.48 : 122,289.28 = 36,519.68 : x - Step 2: Convert to fraction form
81,484.48/122,289.28 = 36,519.68/x - Step 3: Cross multiply
81,484.48x = 122,289.28 × 36,519.68 - Step 4: Simplify right side
81,484.48x = 4,465,965,373.03 - Step 5: Solve for x
x = 4,465,965,373.03/81,484.48 - Step 6: Final answer
x = 54,807.56
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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.