Finding the Fourth Proportional to 78,697.18, 118,044.84 and 47,116.06
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Solution
The fourth proportional to 78,697.18, 118,044.84 and 47,116.06 is: 70,673.53
Step by Step Solution
- Step 1: Write the proportion equation
78,697.18 : 118,044.84 = 47,116.06 : x - Step 2: Convert to fraction form
78,697.18/118,044.84 = 47,116.06/x - Step 3: Cross multiply
78,697.18x = 118,044.84 × 47,116.06 - Step 4: Simplify right side
78,697.18x = 5,561,807,764.13 - Step 5: Solve for x
x = 5,561,807,764.13/78,697.18 - Step 6: Final answer
x = 70,673.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.