Finding the Fourth Proportional to 83,451.92, 115,163.76 and 49,477.05
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Solution
The fourth proportional to 83,451.92, 115,163.76 and 49,477.05 is: 68,278.40
Step by Step Solution
- Step 1: Write the proportion equation
83,451.92 : 115,163.76 = 49,477.05 : x - Step 2: Convert to fraction form
83,451.92/115,163.76 = 49,477.05/x - Step 3: Cross multiply
83,451.92x = 115,163.76 × 49,477.05 - Step 4: Simplify right side
83,451.92x = 5,697,963,111.71 - Step 5: Solve for x
x = 5,697,963,111.71/83,451.92 - Step 6: Final answer
x = 68,278.40
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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.