Finding the Fourth Proportional to 85,479.90, 117,956.08 and 47,238.99
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Solution
The fourth proportional to 85,479.90, 117,956.08 and 47,238.99 is: 65,186.39
Step by Step Solution
- Step 1: Write the proportion equation
85,479.90 : 117,956.08 = 47,238.99 : x - Step 2: Convert to fraction form
85,479.90/117,956.08 = 47,238.99/x - Step 3: Cross multiply
85,479.90x = 117,956.08 × 47,238.99 - Step 4: Simplify right side
85,479.90x = 5,572,126,083.56 - Step 5: Solve for x
x = 5,572,126,083.56/85,479.90 - Step 6: Final answer
x = 65,186.39
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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.