Finding the Fourth Proportional to 86,243.76, 129,385.11 and 26,277.63
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Solution
The fourth proportional to 86,243.76, 129,385.11 and 26,277.63 is: 39,422.38
Step by Step Solution
- Step 1: Write the proportion equation
86,243.76 : 129,385.11 = 26,277.63 : x - Step 2: Convert to fraction form
86,243.76/129,385.11 = 26,277.63/x - Step 3: Cross multiply
86,243.76x = 129,385.11 × 26,277.63 - Step 4: Simplify right side
86,243.76x = 3,399,934,048.09 - Step 5: Solve for x
x = 3,399,934,048.09/86,243.76 - Step 6: Final answer
x = 39,422.38
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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.