Finding the Fourth Proportional to 115,281.09, 172,937.82 and 40,384.09
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Solution
The fourth proportional to 115,281.09, 172,937.82 and 40,384.09 is: 60,581.80
Step by Step Solution
- Step 1: Write the proportion equation
115,281.09 : 172,937.82 = 40,384.09 : x - Step 2: Convert to fraction form
115,281.09/172,937.82 = 40,384.09/x - Step 3: Cross multiply
115,281.09x = 172,937.82 × 40,384.09 - Step 4: Simplify right side
115,281.09x = 6,983,936,487.28 - Step 5: Solve for x
x = 6,983,936,487.28/115,281.09 - Step 6: Final answer
x = 60,581.80
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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.