Finding the Fourth Proportional to 86,315.28, 119,137.44 and 77,347.44
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Solution
The fourth proportional to 86,315.28, 119,137.44 and 77,347.44 is: 106,759.50
Step by Step Solution
- Step 1: Write the proportion equation
86,315.28 : 119,137.44 = 77,347.44 : x - Step 2: Convert to fraction form
86,315.28/119,137.44 = 77,347.44/x - Step 3: Cross multiply
86,315.28x = 119,137.44 × 77,347.44 - Step 4: Simplify right side
86,315.28x = 9,214,975,992.15 - Step 5: Solve for x
x = 9,214,975,992.15/86,315.28 - Step 6: Final answer
x = 106,759.50
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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.