Finding the Fourth Proportional to 81,503.78, 122,157.25 and 59,261.99
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Solution
The fourth proportional to 81,503.78, 122,157.25 and 59,261.99 is: 88,821.42
Step by Step Solution
- Step 1: Write the proportion equation
81,503.78 : 122,157.25 = 59,261.99 : x - Step 2: Convert to fraction form
81,503.78/122,157.25 = 59,261.99/x - Step 3: Cross multiply
81,503.78x = 122,157.25 × 59,261.99 - Step 4: Simplify right side
81,503.78x = 7,239,280,968.99 - Step 5: Solve for x
x = 7,239,280,968.99/81,503.78 - Step 6: Final answer
x = 88,821.42
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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.