Finding the Fourth Proportional to 77,640.44, 107,146.14 and 47,430.68
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Solution
The fourth proportional to 77,640.44, 107,146.14 and 47,430.68 is: 65,455.76
Step by Step Solution
- Step 1: Write the proportion equation
77,640.44 : 107,146.14 = 47,430.68 : x - Step 2: Convert to fraction form
77,640.44/107,146.14 = 47,430.68/x - Step 3: Cross multiply
77,640.44x = 107,146.14 × 47,430.68 - Step 4: Simplify right side
77,640.44x = 5,082,014,279.58 - Step 5: Solve for x
x = 5,082,014,279.58/77,640.44 - Step 6: Final answer
x = 65,455.76
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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.