Finding the Fourth Proportional to 53,413,613.80, 80,120,420.70 and 19,322,657.80
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Solution
The fourth proportional to 53,413,613.80, 80,120,420.70 and 19,322,657.80 is: 28,983,986.70
Step by Step Solution
- Step 1: Write the proportion equation
53,413,613.80 : 80,120,420.70 = 19,322,657.80 : x - Step 2: Convert to fraction form
53,413,613.80/80,120,420.70 = 19,322,657.80/x - Step 3: Cross multiply
53,413,613.80x = 80,120,420.70 × 19,322,657.80 - Step 4: Simplify right side
53,413,613.80x = 1,548,139,471,978,136.50 - Step 5: Solve for x
x = 1,548,139,471,978,136.50/53,413,613.80 - Step 6: Final answer
x = 28,983,986.70
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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.