Finding the Fourth Proportional to 79,174,937.20, 118,762,405.80 and 66,420,353.20
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Solution
The fourth proportional to 79,174,937.20, 118,762,405.80 and 66,420,353.20 is: 99,630,529.80
Step by Step Solution
- Step 1: Write the proportion equation
79,174,937.20 : 118,762,405.80 = 66,420,353.20 : x - Step 2: Convert to fraction form
79,174,937.20/118,762,405.80 = 66,420,353.20/x - Step 3: Cross multiply
79,174,937.20x = 118,762,405.80 × 66,420,353.20 - Step 4: Simplify right side
79,174,937.20x = 7,888,240,940,117,729 - Step 5: Solve for x
x = 7,888,240,940,117,729/79,174,937.20 - Step 6: Final answer
x = 99,630,529.80
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1.5x scale
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.