Finding the Fourth Proportional to 77,065.71, 106,386.26 and 48,809.67
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Solution
The fourth proportional to 77,065.71, 106,386.26 and 48,809.67 is: 67,379.88
Step by Step Solution
- Step 1: Write the proportion equation
77,065.71 : 106,386.26 = 48,809.67 : x - Step 2: Convert to fraction form
77,065.71/106,386.26 = 48,809.67/x - Step 3: Cross multiply
77,065.71x = 106,386.26 × 48,809.67 - Step 4: Simplify right side
77,065.71x = 5,192,677,999.09 - Step 5: Solve for x
x = 5,192,677,999.09/77,065.71 - Step 6: Final answer
x = 67,379.88
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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.