Finding the Fourth Proportional to 80,142,743.70, 120,214,115.55 and 46,130,519.70
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Solution
The fourth proportional to 80,142,743.70, 120,214,115.55 and 46,130,519.70 is: 69,195,779.55
Step by Step Solution
- Step 1: Write the proportion equation
80,142,743.70 : 120,214,115.55 = 46,130,519.70 : x - Step 2: Convert to fraction form
80,142,743.70/120,214,115.55 = 46,130,519.70/x - Step 3: Cross multiply
80,142,743.70x = 120,214,115.55 × 46,130,519.70 - Step 4: Simplify right side
80,142,743.70x = 5,545,539,625,597,352 - Step 5: Solve for x
x = 5,545,539,625,597,352/80,142,743.70 - Step 6: Final answer
x = 69,195,779.55
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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.