Finding the Fourth Proportional to 81,246.16, 121,649.40 and 53,096.08
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Solution
The fourth proportional to 81,246.16, 121,649.40 and 53,096.08 is: 79,500.45
Step by Step Solution
- Step 1: Write the proportion equation
81,246.16 : 121,649.40 = 53,096.08 : x - Step 2: Convert to fraction form
81,246.16/121,649.40 = 53,096.08/x - Step 3: Cross multiply
81,246.16x = 121,649.40 × 53,096.08 - Step 4: Simplify right side
81,246.16x = 6,459,106,274.35 - Step 5: Solve for x
x = 6,459,106,274.35/81,246.16 - Step 6: Final answer
x = 79,500.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.