Finding the Fourth Proportional to 77,854.20, 107,440.93 and 47,638.97
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Solution
The fourth proportional to 77,854.20, 107,440.93 and 47,638.97 is: 65,743.09
Step by Step Solution
- Step 1: Write the proportion equation
77,854.20 : 107,440.93 = 47,638.97 : x - Step 2: Convert to fraction form
77,854.20/107,440.93 = 47,638.97/x - Step 3: Cross multiply
77,854.20x = 107,440.93 × 47,638.97 - Step 4: Simplify right side
77,854.20x = 5,118,375,166.29 - Step 5: Solve for x
x = 5,118,375,166.29/77,854.20 - Step 6: Final answer
x = 65,743.09
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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.