Finding the Fourth Proportional to 104,421.62, 143,992.87 and 61,971.95
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Solution
The fourth proportional to 104,421.62, 143,992.87 and 61,971.95 is: 85,456.62
Step by Step Solution
- Step 1: Write the proportion equation
104,421.62 : 143,992.87 = 61,971.95 : x - Step 2: Convert to fraction form
104,421.62/143,992.87 = 61,971.95/x - Step 3: Cross multiply
104,421.62x = 143,992.87 × 61,971.95 - Step 4: Simplify right side
104,421.62x = 8,923,518,065.10 - Step 5: Solve for x
x = 8,923,518,065.10/104,421.62 - Step 6: Final answer
x = 85,456.62
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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.