Finding the Fourth Proportional to 81,653,464.80, 122,480,197.20 and 70,567,999.20
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Solution
The fourth proportional to 81,653,464.80, 122,480,197.20 and 70,567,999.20 is: 105,851,998.80
Step by Step Solution
- Step 1: Write the proportion equation
81,653,464.80 : 122,480,197.20 = 70,567,999.20 : x - Step 2: Convert to fraction form
81,653,464.80/122,480,197.20 = 70,567,999.20/x - Step 3: Cross multiply
81,653,464.80x = 122,480,197.20 × 70,567,999.20 - Step 4: Simplify right side
81,653,464.80x = 8,643,182,458,025,443 - Step 5: Solve for x
x = 8,643,182,458,025,443/81,653,464.80 - Step 6: Final answer
x = 105,851,998.80
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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.