Finding the Fourth Proportional to 77,515.15, 106,982.61 and 47,318.08
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Solution
The fourth proportional to 77,515.15, 106,982.61 and 47,318.08 is: 65,306.09
Step by Step Solution
- Step 1: Write the proportion equation
77,515.15 : 106,982.61 = 47,318.08 : x - Step 2: Convert to fraction form
77,515.15/106,982.61 = 47,318.08/x - Step 3: Cross multiply
77,515.15x = 106,982.61 × 47,318.08 - Step 4: Simplify right side
77,515.15x = 5,062,211,698.59 - Step 5: Solve for x
x = 5,062,211,698.59/77,515.15 - Step 6: Final answer
x = 65,306.09
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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.