Finding the Fourth Proportional to 78,129,141.68, 117,182,304.87 and 22,782,103.92
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Solution
The fourth proportional to 78,129,141.68, 117,182,304.87 and 22,782,103.92 is: 34,169,829.46
Step by Step Solution
- Step 1: Write the proportion equation
78,129,141.68 : 117,182,304.87 = 22,782,103.92 : x - Step 2: Convert to fraction form
78,129,141.68/117,182,304.87 = 22,782,103.92/x - Step 3: Cross multiply
78,129,141.68x = 117,182,304.87 × 22,782,103.92 - Step 4: Simplify right side
78,129,141.68x = 2,669,659,447,143,192 - Step 5: Solve for x
x = 2,669,659,447,143,192/78,129,141.68 - Step 6: Final answer
x = 34,169,829.46
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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.