Finding the Fourth Proportional to 81,738,970.36, 112,827,112.81 and 48,709,576.87
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Solution
The fourth proportional to 81,738,970.36, 112,827,112.81 and 48,709,576.87 is: 67,235,504.68
Step by Step Solution
- Step 1: Write the proportion equation
81,738,970.36 : 112,827,112.81 = 48,709,576.87 : x - Step 2: Convert to fraction form
81,738,970.36/112,827,112.81 = 48,709,576.87/x - Step 3: Cross multiply
81,738,970.36x = 112,827,112.81 × 48,709,576.87 - Step 4: Simplify right side
81,738,970.36x = 5,495,760,924,035,015 - Step 5: Solve for x
x = 5,495,760,924,035,015/81,738,970.36 - Step 6: Final answer
x = 67,235,504.68
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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.