Finding the Fourth Proportional to 87,970.29, 121,415.25 and 50,244.54
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Solution
The fourth proportional to 87,970.29, 121,415.25 and 50,244.54 is: 69,346.75
Step by Step Solution
- Step 1: Write the proportion equation
87,970.29 : 121,415.25 = 50,244.54 : x - Step 2: Convert to fraction form
87,970.29/121,415.25 = 50,244.54/x - Step 3: Cross multiply
87,970.29x = 121,415.25 × 50,244.54 - Step 4: Simplify right side
87,970.29x = 6,100,453,385.24 - Step 5: Solve for x
x = 6,100,453,385.24/87,970.29 - Step 6: Final answer
x = 69,346.75
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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.