Finding the Fourth Proportional to 78,735.42, 118,102.65 and 28,818.99
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Solution
The fourth proportional to 78,735.42, 118,102.65 and 28,818.99 is: 43,228.31
Step by Step Solution
- Step 1: Write the proportion equation
78,735.42 : 118,102.65 = 28,818.99 : x - Step 2: Convert to fraction form
78,735.42/118,102.65 = 28,818.99/x - Step 3: Cross multiply
78,735.42x = 118,102.65 × 28,818.99 - Step 4: Simplify right side
78,735.42x = 3,403,599,089.32 - Step 5: Solve for x
x = 3,403,599,089.32/78,735.42 - Step 6: Final answer
x = 43,228.31
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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.