Finding the Fourth Proportional to 87,881.40, 121,273.74 and 49,642.74
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Solution
The fourth proportional to 87,881.40, 121,273.74 and 49,642.74 is: 68,505.52
Step by Step Solution
- Step 1: Write the proportion equation
87,881.40 : 121,273.74 = 49,642.74 : x - Step 2: Convert to fraction form
87,881.40/121,273.74 = 49,642.74/x - Step 3: Cross multiply
87,881.40x = 121,273.74 × 49,642.74 - Step 4: Simplify right side
87,881.40x = 6,020,360,743.65 - Step 5: Solve for x
x = 6,020,360,743.65/87,881.40 - Step 6: Final answer
x = 68,505.52
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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.