Finding the Fourth Proportional to 87,878.11, 121,283.86 and 53,880.59
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Solution
The fourth proportional to 87,878.11, 121,283.86 and 53,880.59 is: 74,362.61
Step by Step Solution
- Step 1: Write the proportion equation
87,878.11 : 121,283.86 = 53,880.59 : x - Step 2: Convert to fraction form
87,878.11/121,283.86 = 53,880.59/x - Step 3: Cross multiply
87,878.11x = 121,283.86 × 53,880.59 - Step 4: Simplify right side
87,878.11x = 6,534,845,193.16 - Step 5: Solve for x
x = 6,534,845,193.16/87,878.11 - Step 6: Final answer
x = 74,362.61
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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.