Finding the Fourth Proportional to 77,934.69, 107,479.26 and 51,067.44
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Solution
The fourth proportional to 77,934.69, 107,479.26 and 51,067.44 is: 70,426.80
Step by Step Solution
- Step 1: Write the proportion equation
77,934.69 : 107,479.26 = 51,067.44 : x - Step 2: Convert to fraction form
77,934.69/107,479.26 = 51,067.44/x - Step 3: Cross multiply
77,934.69x = 107,479.26 × 51,067.44 - Step 4: Simplify right side
77,934.69x = 5,488,690,661.29 - Step 5: Solve for x
x = 5,488,690,661.29/77,934.69 - Step 6: Final answer
x = 70,426.80
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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.