Finding the Fourth Proportional to 92,921.64, 128,232.18 and 54,682.68
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Solution
The fourth proportional to 92,921.64, 128,232.18 and 54,682.68 is: 75,462.28
Step by Step Solution
- Step 1: Write the proportion equation
92,921.64 : 128,232.18 = 54,682.68 : x - Step 2: Convert to fraction form
92,921.64/128,232.18 = 54,682.68/x - Step 3: Cross multiply
92,921.64x = 128,232.18 × 54,682.68 - Step 4: Simplify right side
92,921.64x = 7,012,079,264.64 - Step 5: Solve for x
x = 7,012,079,264.64/92,921.64 - Step 6: Final answer
x = 75,462.28
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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.