Finding the Fourth Proportional to 79,549.79, 109,779.11 and 43,742.10
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Solution
The fourth proportional to 79,549.79, 109,779.11 and 43,742.10 is: 60,364.32
Step by Step Solution
- Step 1: Write the proportion equation
79,549.79 : 109,779.11 = 43,742.10 : x - Step 2: Convert to fraction form
79,549.79/109,779.11 = 43,742.10/x - Step 3: Cross multiply
79,549.79x = 109,779.11 × 43,742.10 - Step 4: Simplify right side
79,549.79x = 4,801,968,588.82 - Step 5: Solve for x
x = 4,801,968,588.82/79,549.79 - Step 6: Final answer
x = 60,364.32
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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.