Finding the Fourth Proportional to 89,980.98, 124,170.36 and 49,143.75
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Solution
The fourth proportional to 89,980.98, 124,170.36 and 49,143.75 is: 67,816.52
Step by Step Solution
- Step 1: Write the proportion equation
89,980.98 : 124,170.36 = 49,143.75 : x - Step 2: Convert to fraction form
89,980.98/124,170.36 = 49,143.75/x - Step 3: Cross multiply
89,980.98x = 124,170.36 × 49,143.75 - Step 4: Simplify right side
89,980.98x = 6,102,197,129.25 - Step 5: Solve for x
x = 6,102,197,129.25/89,980.98 - Step 6: Final answer
x = 67,816.52
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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.