Finding the Fourth Proportional to 76,740.60, 115,283.70 and 53,412.60
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Solution
The fourth proportional to 76,740.60, 115,283.70 and 53,412.60 is: 80,239.17
Step by Step Solution
- Step 1: Write the proportion equation
76,740.60 : 115,283.70 = 53,412.60 : x - Step 2: Convert to fraction form
76,740.60/115,283.70 = 53,412.60/x - Step 3: Cross multiply
76,740.60x = 115,283.70 × 53,412.60 - Step 4: Simplify right side
76,740.60x = 6,157,602,154.62 - Step 5: Solve for x
x = 6,157,602,154.62/76,740.60 - Step 6: Final answer
x = 80,239.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.