Finding the Fourth Proportional to 115,398.87, 173,130.09 and 40,509.13
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Solution
The fourth proportional to 115,398.87, 173,130.09 and 40,509.13 is: 60,774.85
Step by Step Solution
- Step 1: Write the proportion equation
115,398.87 : 173,130.09 = 40,509.13 : x - Step 2: Convert to fraction form
115,398.87/173,130.09 = 40,509.13/x - Step 3: Cross multiply
115,398.87x = 173,130.09 × 40,509.13 - Step 4: Simplify right side
115,398.87x = 7,013,349,322.72 - Step 5: Solve for x
x = 7,013,349,322.72/115,398.87 - Step 6: Final answer
x = 60,774.85
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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.