Finding the Fourth Proportional to 79,371.96, 109,534.68 and 43,565.31
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Solution
The fourth proportional to 79,371.96, 109,534.68 and 43,565.31 is: 60,120.88
Step by Step Solution
- Step 1: Write the proportion equation
79,371.96 : 109,534.68 = 43,565.31 : x - Step 2: Convert to fraction form
79,371.96/109,534.68 = 43,565.31/x - Step 3: Cross multiply
79,371.96x = 109,534.68 × 43,565.31 - Step 4: Simplify right side
79,371.96x = 4,771,912,289.95 - Step 5: Solve for x
x = 4,771,912,289.95/79,371.96 - Step 6: Final answer
x = 60,120.88
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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.