Finding the Fourth Proportional to 84,197.76, 116,165.76 and 55,909.08
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Solution
The fourth proportional to 84,197.76, 116,165.76 and 55,909.08 is: 77,136.50
Step by Step Solution
- Step 1: Write the proportion equation
84,197.76 : 116,165.76 = 55,909.08 : x - Step 2: Convert to fraction form
84,197.76/116,165.76 = 55,909.08/x - Step 3: Cross multiply
84,197.76x = 116,165.76 × 55,909.08 - Step 4: Simplify right side
84,197.76x = 6,494,720,769.10 - Step 5: Solve for x
x = 6,494,720,769.10/84,197.76 - Step 6: Final answer
x = 77,136.50
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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.