Finding the Fourth Proportional to 72,711.11, 109,124.99 and 37,660.79
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Solution
The fourth proportional to 72,711.11, 109,124.99 and 37,660.79 is: 56,521.39
Step by Step Solution
- Step 1: Write the proportion equation
72,711.11 : 109,124.99 = 37,660.79 : x - Step 2: Convert to fraction form
72,711.11/109,124.99 = 37,660.79/x - Step 3: Cross multiply
72,711.11x = 109,124.99 × 37,660.79 - Step 4: Simplify right side
72,711.11x = 4,109,732,598.21 - Step 5: Solve for x
x = 4,109,732,598.21/72,711.11 - Step 6: Final answer
x = 56,521.39
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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.