Finding the Fourth Proportional to 103,064.90, 142,233.66 and 57,743.26
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Solution
The fourth proportional to 103,064.90, 142,233.66 and 57,743.26 is: 79,687.99
Step by Step Solution
- Step 1: Write the proportion equation
103,064.90 : 142,233.66 = 57,743.26 : x - Step 2: Convert to fraction form
103,064.90/142,233.66 = 57,743.26/x - Step 3: Cross multiply
103,064.90x = 142,233.66 × 57,743.26 - Step 4: Simplify right side
103,064.90x = 8,213,035,210.13 - Step 5: Solve for x
x = 8,213,035,210.13/103,064.90 - Step 6: Final answer
x = 79,687.99
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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.