Finding the Fourth Proportional to 86,390.16, 129,417.11 and 48,836.63
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Solution
The fourth proportional to 86,390.16, 129,417.11 and 48,836.63 is: 73,159.90
Step by Step Solution
- Step 1: Write the proportion equation
86,390.16 : 129,417.11 = 48,836.63 : x - Step 2: Convert to fraction form
86,390.16/129,417.11 = 48,836.63/x - Step 3: Cross multiply
86,390.16x = 129,417.11 × 48,836.63 - Step 4: Simplify right side
86,390.16x = 6,320,295,516.74 - Step 5: Solve for x
x = 6,320,295,516.74/86,390.16 - Step 6: Final answer
x = 73,159.90
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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.