Finding the Fourth Proportional to 100,430.44, 138,595.62 and 57,992.68
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Solution
The fourth proportional to 100,430.44, 138,595.62 and 57,992.68 is: 80,030.83
Step by Step Solution
- Step 1: Write the proportion equation
100,430.44 : 138,595.62 = 57,992.68 : x - Step 2: Convert to fraction form
100,430.44/138,595.62 = 57,992.68/x - Step 3: Cross multiply
100,430.44x = 138,595.62 × 57,992.68 - Step 4: Simplify right side
100,430.44x = 8,037,531,440.06 - Step 5: Solve for x
x = 8,037,531,440.06/100,430.44 - Step 6: Final answer
x = 80,030.83
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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.