Finding the Fourth Proportional to 77,649.91, 107,149.49 and 45,392.09
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Solution
The fourth proportional to 77,649.91, 107,149.49 and 45,392.09 is: 62,636.76
Step by Step Solution
- Step 1: Write the proportion equation
77,649.91 : 107,149.49 = 45,392.09 : x - Step 2: Convert to fraction form
77,649.91/107,149.49 = 45,392.09/x - Step 3: Cross multiply
77,649.91x = 107,149.49 × 45,392.09 - Step 4: Simplify right side
77,649.91x = 4,863,739,303.76 - Step 5: Solve for x
x = 4,863,739,303.76/77,649.91 - Step 6: Final answer
x = 62,636.76
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1.5x scale
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.