Finding the Fourth Proportional to 86,142.30, 118,867.95 and 48,415.74
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Solution
The fourth proportional to 86,142.30, 118,867.95 and 48,415.74 is: 66,808.99
Step by Step Solution
- Step 1: Write the proportion equation
86,142.30 : 118,867.95 = 48,415.74 : x - Step 2: Convert to fraction form
86,142.30/118,867.95 = 48,415.74/x - Step 3: Cross multiply
86,142.30x = 118,867.95 × 48,415.74 - Step 4: Simplify right side
86,142.30x = 5,755,079,761.53 - Step 5: Solve for x
x = 5,755,079,761.53/86,142.30 - Step 6: Final answer
x = 66,808.99
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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.