Finding the Fourth Proportional to 92,820.36, 128,092.20 and 50,378.94
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Solution
The fourth proportional to 92,820.36, 128,092.20 and 50,378.94 is: 69,522.99
Step by Step Solution
- Step 1: Write the proportion equation
92,820.36 : 128,092.20 = 50,378.94 : x - Step 2: Convert to fraction form
92,820.36/128,092.20 = 50,378.94/x - Step 3: Cross multiply
92,820.36x = 128,092.20 × 50,378.94 - Step 4: Simplify right side
92,820.36x = 6,453,149,258.27 - Step 5: Solve for x
x = 6,453,149,258.27/92,820.36 - Step 6: Final answer
x = 69,522.99
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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.