Finding the Fourth Proportional to 84,502.76, 126,878.74 and 47,135.84
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Solution
The fourth proportional to 84,502.76, 126,878.74 and 47,135.84 is: 70,773.26
Step by Step Solution
- Step 1: Write the proportion equation
84,502.76 : 126,878.74 = 47,135.84 : x - Step 2: Convert to fraction form
84,502.76/126,878.74 = 47,135.84/x - Step 3: Cross multiply
84,502.76x = 126,878.74 × 47,135.84 - Step 4: Simplify right side
84,502.76x = 5,980,535,988.04 - Step 5: Solve for x
x = 5,980,535,988.04/84,502.76 - Step 6: Final answer
x = 70,773.26
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.