Finding the Fourth Proportional to 87,988.24, 121,359.26 and 57,762.53
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Solution
The fourth proportional to 87,988.24, 121,359.26 and 57,762.53 is: 79,669.95
Step by Step Solution
- Step 1: Write the proportion equation
87,988.24 : 121,359.26 = 57,762.53 : x - Step 2: Convert to fraction form
87,988.24/121,359.26 = 57,762.53/x - Step 3: Cross multiply
87,988.24x = 121,359.26 × 57,762.53 - Step 4: Simplify right side
87,988.24x = 7,010,017,896.53 - Step 5: Solve for x
x = 7,010,017,896.53/87,988.24 - Step 6: Final answer
x = 79,669.95
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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.