Finding the Fourth Proportional to 72,836.42, 100,542.47 and 56,925.99
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Solution
The fourth proportional to 72,836.42, 100,542.47 and 56,925.99 is: 78,579.92
Step by Step Solution
- Step 1: Write the proportion equation
72,836.42 : 100,542.47 = 56,925.99 : x - Step 2: Convert to fraction form
72,836.42/100,542.47 = 56,925.99/x - Step 3: Cross multiply
72,836.42x = 100,542.47 × 56,925.99 - Step 4: Simplify right side
72,836.42x = 5,723,479,357.17 - Step 5: Solve for x
x = 5,723,479,357.17/72,836.42 - Step 6: Final answer
x = 78,579.92
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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.