Finding the Fourth Proportional to 98,520.63, 135,961.70 and 53,808.63
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Solution
The fourth proportional to 98,520.63, 135,961.70 and 53,808.63 is: 74,257.67
Step by Step Solution
- Step 1: Write the proportion equation
98,520.63 : 135,961.70 = 53,808.63 : x - Step 2: Convert to fraction form
98,520.63/135,961.70 = 53,808.63/x - Step 3: Cross multiply
98,520.63x = 135,961.70 × 53,808.63 - Step 4: Simplify right side
98,520.63x = 7,315,912,809.47 - Step 5: Solve for x
x = 7,315,912,809.47/98,520.63 - Step 6: Final answer
x = 74,257.67
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1.5x scale
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.