Finding the Fourth Proportional to 72,837.42, 100,543.85 and 56,926.99
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Solution
The fourth proportional to 72,837.42, 100,543.85 and 56,926.99 is: 78,581.29
Step by Step Solution
- Step 1: Write the proportion equation
72,837.42 : 100,543.85 = 56,926.99 : x - Step 2: Convert to fraction form
72,837.42/100,543.85 = 56,926.99/x - Step 3: Cross multiply
72,837.42x = 100,543.85 × 56,926.99 - Step 4: Simplify right side
72,837.42x = 5,723,658,743.51 - Step 5: Solve for x
x = 5,723,658,743.51/72,837.42 - Step 6: Final answer
x = 78,581.29
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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.