Finding the Fourth Proportional to 77,849.68, 107,440.49 and 47,654.95
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Solution
The fourth proportional to 77,849.68, 107,440.49 and 47,654.95 is: 65,768.69
Step by Step Solution
- Step 1: Write the proportion equation
77,849.68 : 107,440.49 = 47,654.95 : x - Step 2: Convert to fraction form
77,849.68/107,440.49 = 47,654.95/x - Step 3: Cross multiply
77,849.68x = 107,440.49 × 47,654.95 - Step 4: Simplify right side
77,849.68x = 5,120,071,178.93 - Step 5: Solve for x
x = 5,120,071,178.93/77,849.68 - Step 6: Final answer
x = 65,768.69
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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.