Finding the Fourth Proportional to 77,340,515.36, 106,727,779.92 and 42,533,205.12
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Solution
The fourth proportional to 77,340,515.36, 106,727,779.92 and 42,533,205.12 is: 58,694,650.98
Step by Step Solution
- Step 1: Write the proportion equation
77,340,515.36 : 106,727,779.92 = 42,533,205.12 : x - Step 2: Convert to fraction form
77,340,515.36/106,727,779.92 = 42,533,205.12/x - Step 3: Cross multiply
77,340,515.36x = 106,727,779.92 × 42,533,205.12 - Step 4: Simplify right side
77,340,515.36x = 4,539,474,555,339,577 - Step 5: Solve for x
x = 4,539,474,555,339,577/77,340,515.36 - Step 6: Final answer
x = 58,694,650.98
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.