Finding the Fourth Proportional to 99,589.91, 137,421.97 and 56,554.00
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Solution
The fourth proportional to 99,589.91, 137,421.97 and 56,554.00 is: 78,037.64
Step by Step Solution
- Step 1: Write the proportion equation
99,589.91 : 137,421.97 = 56,554.00 : x - Step 2: Convert to fraction form
99,589.91/137,421.97 = 56,554.00/x - Step 3: Cross multiply
99,589.91x = 137,421.97 × 56,554.00 - Step 4: Simplify right side
99,589.91x = 7,771,761,606.44 - Step 5: Solve for x
x = 7,771,761,606.44/99,589.91 - Step 6: Final answer
x = 78,037.64
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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.