Finding the Fourth Proportional to 86,031.62, 118,742.63 and 47,804.31
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Solution
The fourth proportional to 86,031.62, 118,742.63 and 47,804.31 is: 65,980.50
Step by Step Solution
- Step 1: Write the proportion equation
86,031.62 : 118,742.63 = 47,804.31 : x - Step 2: Convert to fraction form
86,031.62/118,742.63 = 47,804.31/x - Step 3: Cross multiply
86,031.62x = 118,742.63 × 47,804.31 - Step 4: Simplify right side
86,031.62x = 5,676,409,672.08 - Step 5: Solve for x
x = 5,676,409,672.08/86,031.62 - Step 6: Final answer
x = 65,980.50
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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.