Finding the Fourth Proportional to 76,898.65, 106,120.43 and 42,908.57
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Solution
The fourth proportional to 76,898.65, 106,120.43 and 42,908.57 is: 59,213.99
Step by Step Solution
- Step 1: Write the proportion equation
76,898.65 : 106,120.43 = 42,908.57 : x - Step 2: Convert to fraction form
76,898.65/106,120.43 = 42,908.57/x - Step 3: Cross multiply
76,898.65x = 106,120.43 × 42,908.57 - Step 4: Simplify right side
76,898.65x = 4,553,475,286.59 - Step 5: Solve for x
x = 4,553,475,286.59/76,898.65 - Step 6: Final answer
x = 59,213.99
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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.