Finding the Fourth Proportional to 78,398,847.70, 117,598,271.55 and 44,386,623.70
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Solution
The fourth proportional to 78,398,847.70, 117,598,271.55 and 44,386,623.70 is: 66,579,935.55
Step by Step Solution
- Step 1: Write the proportion equation
78,398,847.70 : 117,598,271.55 = 44,386,623.70 : x - Step 2: Convert to fraction form
78,398,847.70/117,598,271.55 = 44,386,623.70/x - Step 3: Cross multiply
78,398,847.70x = 117,598,271.55 × 44,386,623.70 - Step 4: Simplify right side
78,398,847.70x = 5,219,790,227,060,266 - Step 5: Solve for x
x = 5,219,790,227,060,266/78,398,847.70 - Step 6: Final answer
x = 66,579,935.55
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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.