Finding the Fourth Proportional to 72,992.67, 100,729.98 and 42,771.99
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Solution
The fourth proportional to 72,992.67, 100,729.98 and 42,771.99 is: 59,025.40
Step by Step Solution
- Step 1: Write the proportion equation
72,992.67 : 100,729.98 = 42,771.99 : x - Step 2: Convert to fraction form
72,992.67/100,729.98 = 42,771.99/x - Step 3: Cross multiply
72,992.67x = 100,729.98 × 42,771.99 - Step 4: Simplify right side
72,992.67x = 4,308,421,697.26 - Step 5: Solve for x
x = 4,308,421,697.26/72,992.67 - Step 6: Final answer
x = 59,025.40
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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.