Finding the Fourth Proportional to 87,860.94, 121,277.67 and 53,405.55
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Solution
The fourth proportional to 87,860.94, 121,277.67 and 53,405.55 is: 73,717.63
Step by Step Solution
- Step 1: Write the proportion equation
87,860.94 : 121,277.67 = 53,405.55 : x - Step 2: Convert to fraction form
87,860.94/121,277.67 = 53,405.55/x - Step 3: Cross multiply
87,860.94x = 121,277.67 × 53,405.55 - Step 4: Simplify right side
87,860.94x = 6,476,900,669.07 - Step 5: Solve for x
x = 6,476,900,669.07/87,860.94 - Step 6: Final answer
x = 73,717.63
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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.