Finding the Fourth Proportional to 77,012.67, 115,358.01 and 61,938.32
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Solution
The fourth proportional to 77,012.67, 115,358.01 and 61,938.32 is: 92,777.99
Step by Step Solution
- Step 1: Write the proportion equation
77,012.67 : 115,358.01 = 61,938.32 : x - Step 2: Convert to fraction form
77,012.67/115,358.01 = 61,938.32/x - Step 3: Cross multiply
77,012.67x = 115,358.01 × 61,938.32 - Step 4: Simplify right side
77,012.67x = 7,145,080,761.15 - Step 5: Solve for x
x = 7,145,080,761.15/77,012.67 - Step 6: Final answer
x = 92,777.99
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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.