Finding the Fourth Proportional to 89,128.87, 122,986.14 and 53,305.81
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Solution
The fourth proportional to 89,128.87, 122,986.14 and 53,305.81 is: 73,555.02
Step by Step Solution
- Step 1: Write the proportion equation
89,128.87 : 122,986.14 = 53,305.81 : x - Step 2: Convert to fraction form
89,128.87/122,986.14 = 53,305.81/x - Step 3: Cross multiply
89,128.87x = 122,986.14 × 53,305.81 - Step 4: Simplify right side
89,128.87x = 6,555,875,196.54 - Step 5: Solve for x
x = 6,555,875,196.54/89,128.87 - Step 6: Final answer
x = 73,555.02
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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.