Finding the Fourth Proportional to 76,934.05, 106,139.30 and 48,203.62
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Solution
The fourth proportional to 76,934.05, 106,139.30 and 48,203.62 is: 66,502.39
Step by Step Solution
- Step 1: Write the proportion equation
76,934.05 : 106,139.30 = 48,203.62 : x - Step 2: Convert to fraction form
76,934.05/106,139.30 = 48,203.62/x - Step 3: Cross multiply
76,934.05x = 106,139.30 × 48,203.62 - Step 4: Simplify right side
76,934.05x = 5,116,297,842.17 - Step 5: Solve for x
x = 5,116,297,842.17/76,934.05 - Step 6: Final answer
x = 66,502.39
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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.