Finding the Fourth Proportional to 84,122.70, 126,214.80 and 39,165.42
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Solution
The fourth proportional to 84,122.70, 126,214.80 and 39,165.42 is: 58,762.45
Step by Step Solution
- Step 1: Write the proportion equation
84,122.70 : 126,214.80 = 39,165.42 : x - Step 2: Convert to fraction form
84,122.70/126,214.80 = 39,165.42/x - Step 3: Cross multiply
84,122.70x = 126,214.80 × 39,165.42 - Step 4: Simplify right side
84,122.70x = 4,943,255,652.22 - Step 5: Solve for x
x = 4,943,255,652.22/84,122.70 - Step 6: Final answer
x = 58,762.45
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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.