Finding the Fourth Proportional to 77,513.45, 106,939.86 and 48,825.41
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Solution
The fourth proportional to 77,513.45, 106,939.86 and 48,825.41 is: 67,360.99
Step by Step Solution
- Step 1: Write the proportion equation
77,513.45 : 106,939.86 = 48,825.41 : x - Step 2: Convert to fraction form
77,513.45/106,939.86 = 48,825.41/x - Step 3: Cross multiply
77,513.45x = 106,939.86 × 48,825.41 - Step 4: Simplify right side
77,513.45x = 5,221,382,509.84 - Step 5: Solve for x
x = 5,221,382,509.84/77,513.45 - Step 6: Final answer
x = 67,360.99
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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.