Finding the Fourth Proportional to 67,664.90, 101,497.35 and 20,917.70
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Solution
The fourth proportional to 67,664.90, 101,497.35 and 20,917.70 is: 31,376.55
Step by Step Solution
- Step 1: Write the proportion equation
67,664.90 : 101,497.35 = 20,917.70 : x - Step 2: Convert to fraction form
67,664.90/101,497.35 = 20,917.70/x - Step 3: Cross multiply
67,664.90x = 101,497.35 × 20,917.70 - Step 4: Simplify right side
67,664.90x = 2,123,091,118.10 - Step 5: Solve for x
x = 2,123,091,118.10/67,664.90 - Step 6: Final answer
x = 31,376.55
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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.