Finding the Fourth Proportional to 84,603.80, 126,905.70 and 76,827.80
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Solution
The fourth proportional to 84,603.80, 126,905.70 and 76,827.80 is: 115,241.70
Step by Step Solution
- Step 1: Write the proportion equation
84,603.80 : 126,905.70 = 76,827.80 : x - Step 2: Convert to fraction form
84,603.80/126,905.70 = 76,827.80/x - Step 3: Cross multiply
84,603.80x = 126,905.70 × 76,827.80 - Step 4: Simplify right side
84,603.80x = 9,749,885,738.46 - Step 5: Solve for x
x = 9,749,885,738.46/84,603.80 - Step 6: Final answer
x = 115,241.70
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1.5x scale
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.