Finding the Fourth Proportional to 87,878.49, 121,284.38 and 53,880.96
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Solution
The fourth proportional to 87,878.49, 121,284.38 and 53,880.96 is: 74,363.12
Step by Step Solution
- Step 1: Write the proportion equation
87,878.49 : 121,284.38 = 53,880.96 : x - Step 2: Convert to fraction form
87,878.49/121,284.38 = 53,880.96/x - Step 3: Cross multiply
87,878.49x = 121,284.38 × 53,880.96 - Step 4: Simplify right side
87,878.49x = 6,534,918,827.40 - Step 5: Solve for x
x = 6,534,918,827.40/87,878.49 - Step 6: Final answer
x = 74,363.12
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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.