Finding the Fourth Proportional to 84,769,615.80, 127,154,423.70 and 30,243,769.20
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Solution
The fourth proportional to 84,769,615.80, 127,154,423.70 and 30,243,769.20 is: 45,365,653.80
Step by Step Solution
- Step 1: Write the proportion equation
84,769,615.80 : 127,154,423.70 = 30,243,769.20 : x - Step 2: Convert to fraction form
84,769,615.80/127,154,423.70 = 30,243,769.20/x - Step 3: Cross multiply
84,769,615.80x = 127,154,423.70 × 30,243,769.20 - Step 4: Simplify right side
84,769,615.80x = 3,845,629,043,141,810 - Step 5: Solve for x
x = 3,845,629,043,141,810/84,769,615.80 - Step 6: Final answer
x = 45,365,653.80
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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.