Finding the Fourth Proportional to 88,178.18, 121,720.78 and 61,336.26
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Solution
The fourth proportional to 88,178.18, 121,720.78 and 61,336.26 is: 84,668.31
Step by Step Solution
- Step 1: Write the proportion equation
88,178.18 : 121,720.78 = 61,336.26 : x - Step 2: Convert to fraction form
88,178.18/121,720.78 = 61,336.26/x - Step 3: Cross multiply
88,178.18x = 121,720.78 × 61,336.26 - Step 4: Simplify right side
88,178.18x = 7,465,897,561.63 - Step 5: Solve for x
x = 7,465,897,561.63/88,178.18 - Step 6: Final answer
x = 84,668.31
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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.