Finding the Fourth Proportional to 99,864.09, 137,811.74 and 54,542.09
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Solution
The fourth proportional to 99,864.09, 137,811.74 and 54,542.09 is: 75,267.70
Step by Step Solution
- Step 1: Write the proportion equation
99,864.09 : 137,811.74 = 54,542.09 : x - Step 2: Convert to fraction form
99,864.09/137,811.74 = 54,542.09/x - Step 3: Cross multiply
99,864.09x = 137,811.74 × 54,542.09 - Step 4: Simplify right side
99,864.09x = 7,516,540,397.96 - Step 5: Solve for x
x = 7,516,540,397.96/99,864.09 - Step 6: Final answer
x = 75,267.70
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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.