Finding the Fourth Proportional to 87,738.24, 121,069.44 and 51,929.76
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Solution
The fourth proportional to 87,738.24, 121,069.44 and 51,929.76 is: 71,657.55
Step by Step Solution
- Step 1: Write the proportion equation
87,738.24 : 121,069.44 = 51,929.76 : x - Step 2: Convert to fraction form
87,738.24/121,069.44 = 51,929.76/x - Step 3: Cross multiply
87,738.24x = 121,069.44 × 51,929.76 - Step 4: Simplify right side
87,738.24x = 6,287,106,962.53 - Step 5: Solve for x
x = 6,287,106,962.53/87,738.24 - Step 6: Final answer
x = 71,657.55
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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.