Finding the Fourth Proportional to 100,066.32, 138,094.74 and 57,044.99
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Solution
The fourth proportional to 100,066.32, 138,094.74 and 57,044.99 is: 78,723.92
Step by Step Solution
- Step 1: Write the proportion equation
100,066.32 : 138,094.74 = 57,044.99 : x - Step 2: Convert to fraction form
100,066.32/138,094.74 = 57,044.99/x - Step 3: Cross multiply
100,066.32x = 138,094.74 × 57,044.99 - Step 4: Simplify right side
100,066.32x = 7,877,613,407.59 - Step 5: Solve for x
x = 7,877,613,407.59/100,066.32 - Step 6: Final answer
x = 78,723.92
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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.