Finding the Fourth Proportional to 77,609.70, 116,495.99 and 68,781.51
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Solution
The fourth proportional to 77,609.70, 116,495.99 and 68,781.51 is: 103,244.44
Step by Step Solution
- Step 1: Write the proportion equation
77,609.70 : 116,495.99 = 68,781.51 : x - Step 2: Convert to fraction form
77,609.70/116,495.99 = 68,781.51/x - Step 3: Cross multiply
77,609.70x = 116,495.99 × 68,781.51 - Step 4: Simplify right side
77,609.70x = 8,012,769,757.24 - Step 5: Solve for x
x = 8,012,769,757.24/77,609.70 - Step 6: Final answer
x = 103,244.44
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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.