Finding the Fourth Proportional to 87,929.64, 121,244.78 and 63,682.65
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Solution
The fourth proportional to 87,929.64, 121,244.78 and 63,682.65 is: 87,810.99
Step by Step Solution
- Step 1: Write the proportion equation
87,929.64 : 121,244.78 = 63,682.65 : x - Step 2: Convert to fraction form
87,929.64/121,244.78 = 63,682.65/x - Step 3: Cross multiply
87,929.64x = 121,244.78 × 63,682.65 - Step 4: Simplify right side
87,929.64x = 7,721,188,570.65 - Step 5: Solve for x
x = 7,721,188,570.65/87,929.64 - Step 6: Final answer
x = 87,810.99
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1.5x scale
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.