Finding the Fourth Proportional to 80,862.75, 121,133.68 and 38,109.65
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Solution
The fourth proportional to 80,862.75, 121,133.68 and 38,109.65 is: 57,088.85
Step by Step Solution
- Step 1: Write the proportion equation
80,862.75 : 121,133.68 = 38,109.65 : x - Step 2: Convert to fraction form
80,862.75/121,133.68 = 38,109.65/x - Step 3: Cross multiply
80,862.75x = 121,133.68 × 38,109.65 - Step 4: Simplify right side
80,862.75x = 4,616,361,447.07 - Step 5: Solve for x
x = 4,616,361,447.07/80,862.75 - Step 6: Final answer
x = 57,088.85
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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.