Finding the Fourth Proportional to 78,160.91, 107,864.04 and 47,962.91
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Solution
The fourth proportional to 78,160.91, 107,864.04 and 47,962.91 is: 66,190.03
Step by Step Solution
- Step 1: Write the proportion equation
78,160.91 : 107,864.04 = 47,962.91 : x - Step 2: Convert to fraction form
78,160.91/107,864.04 = 47,962.91/x - Step 3: Cross multiply
78,160.91x = 107,864.04 × 47,962.91 - Step 4: Simplify right side
78,160.91x = 5,173,472,703.44 - Step 5: Solve for x
x = 5,173,472,703.44/78,160.91 - Step 6: Final answer
x = 66,190.03
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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.