Finding the Fourth Proportional to 77,028.84, 115,550.69 and 20,869.65
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Solution
The fourth proportional to 77,028.84, 115,550.69 and 20,869.65 is: 31,306.49
Step by Step Solution
- Step 1: Write the proportion equation
77,028.84 : 115,550.69 = 20,869.65 : x - Step 2: Convert to fraction form
77,028.84/115,550.69 = 20,869.65/x - Step 3: Cross multiply
77,028.84x = 115,550.69 × 20,869.65 - Step 4: Simplify right side
77,028.84x = 2,411,502,353.21 - Step 5: Solve for x
x = 2,411,502,353.21/77,028.84 - Step 6: Final answer
x = 31,306.49
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1.5x scale
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.