Finding the Fourth Proportional to 87,710.48, 121,012.84 and 53,683.50
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Solution
The fourth proportional to 87,710.48, 121,012.84 and 53,683.50 is: 74,066.32
Step by Step Solution
- Step 1: Write the proportion equation
87,710.48 : 121,012.84 = 53,683.50 : x - Step 2: Convert to fraction form
87,710.48/121,012.84 = 53,683.50/x - Step 3: Cross multiply
87,710.48x = 121,012.84 × 53,683.50 - Step 4: Simplify right side
87,710.48x = 6,496,392,435.03 - Step 5: Solve for x
x = 6,496,392,435.03/87,710.48 - Step 6: Final answer
x = 74,066.32
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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.