Finding the Fourth Proportional to 76,801.70, 115,202.55 and 21,397.70
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Solution
The fourth proportional to 76,801.70, 115,202.55 and 21,397.70 is: 32,096.55
Step by Step Solution
- Step 1: Write the proportion equation
76,801.70 : 115,202.55 = 21,397.70 : x - Step 2: Convert to fraction form
76,801.70/115,202.55 = 21,397.70/x - Step 3: Cross multiply
76,801.70x = 115,202.55 × 21,397.70 - Step 4: Simplify right side
76,801.70x = 2,465,069,604.14 - Step 5: Solve for x
x = 2,465,069,604.14/76,801.70 - Step 6: Final answer
x = 32,096.55
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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.