Finding the Fourth Proportional to 87,010,772.80, 130,404,184.80 and 66,715,412.80
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Solution
The fourth proportional to 87,010,772.80, 130,404,184.80 and 66,715,412.80 is: 99,987,262.95
Step by Step Solution
- Step 1: Write the proportion equation
87,010,772.80 : 130,404,184.80 = 66,715,412.80 : x - Step 2: Convert to fraction form
87,010,772.80/130,404,184.80 = 66,715,412.80/x - Step 3: Cross multiply
87,010,772.80x = 130,404,184.80 × 66,715,412.80 - Step 4: Simplify right side
87,010,772.80x = 8,699,969,019,779,485 - Step 5: Solve for x
x = 8,699,969,019,779,485/87,010,772.80 - Step 6: Final answer
x = 99,987,262.95
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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.