Finding the Fourth Proportional to 79,174,943.20, 118,762,414.80 and 66,420,359.20
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Solution
The fourth proportional to 79,174,943.20, 118,762,414.80 and 66,420,359.20 is: 99,630,538.80
Step by Step Solution
- Step 1: Write the proportion equation
79,174,943.20 : 118,762,414.80 = 66,420,359.20 : x - Step 2: Convert to fraction form
79,174,943.20/118,762,414.80 = 66,420,359.20/x - Step 3: Cross multiply
79,174,943.20x = 118,762,414.80 × 66,420,359.20 - Step 4: Simplify right side
79,174,943.20x = 7,888,242,250,475,396 - Step 5: Solve for x
x = 7,888,242,250,475,396/79,174,943.20 - Step 6: Final answer
x = 99,630,538.80
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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.