Finding the Fourth Proportional to 72,711.84, 100,338.84 and 40,883.76
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Solution
The fourth proportional to 72,711.84, 100,338.84 and 40,883.76 is: 56,417.62
Step by Step Solution
- Step 1: Write the proportion equation
72,711.84 : 100,338.84 = 40,883.76 : x - Step 2: Convert to fraction form
72,711.84/100,338.84 = 40,883.76/x - Step 3: Cross multiply
72,711.84x = 100,338.84 × 40,883.76 - Step 4: Simplify right side
72,711.84x = 4,102,229,053.24 - Step 5: Solve for x
x = 4,102,229,053.24/72,711.84 - Step 6: Final answer
x = 56,417.62
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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.