Finding the Fourth Proportional to 77,972.48, 107,479.68 and 68,524.80
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Solution
The fourth proportional to 77,972.48, 107,479.68 and 68,524.80 is: 94,456.71
Step by Step Solution
- Step 1: Write the proportion equation
77,972.48 : 107,479.68 = 68,524.80 : x - Step 2: Convert to fraction form
77,972.48/107,479.68 = 68,524.80/x - Step 3: Cross multiply
77,972.48x = 107,479.68 × 68,524.80 - Step 4: Simplify right side
77,972.48x = 7,365,023,576.06 - Step 5: Solve for x
x = 7,365,023,576.06/77,972.48 - Step 6: Final answer
x = 94,456.71
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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.