Finding the Fourth Proportional to 72,838.42, 100,545.23 and 56,927.99
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Solution
The fourth proportional to 72,838.42, 100,545.23 and 56,927.99 is: 78,582.67
Step by Step Solution
- Step 1: Write the proportion equation
72,838.42 : 100,545.23 = 56,927.99 : x - Step 2: Convert to fraction form
72,838.42/100,545.23 = 56,927.99/x - Step 3: Cross multiply
72,838.42x = 100,545.23 × 56,927.99 - Step 4: Simplify right side
72,838.42x = 5,723,837,847.99 - Step 5: Solve for x
x = 5,723,837,847.99/72,838.42 - Step 6: Final answer
x = 78,582.67
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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.