Finding the Fourth Proportional to 87,988.24, 121,260.90 and 62,495.74
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Solution
The fourth proportional to 87,988.24, 121,260.90 and 62,495.74 is: 86,128.44
Step by Step Solution
- Step 1: Write the proportion equation
87,988.24 : 121,260.90 = 62,495.74 : x - Step 2: Convert to fraction form
87,988.24/121,260.90 = 62,495.74/x - Step 3: Cross multiply
87,988.24x = 121,260.90 × 62,495.74 - Step 4: Simplify right side
87,988.24x = 7,578,289,678.57 - Step 5: Solve for x
x = 7,578,289,678.57/87,988.24 - Step 6: Final answer
x = 86,128.44
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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.