Finding the Fourth Proportional to 72,873,388.40, 100,565,268.21 and 39,833,769.09
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Solution
The fourth proportional to 72,873,388.40, 100,565,268.21 and 39,833,769.09 is: 54,970,597.09
Step by Step Solution
- Step 1: Write the proportion equation
72,873,388.40 : 100,565,268.21 = 39,833,769.09 : x - Step 2: Convert to fraction form
72,873,388.40/100,565,268.21 = 39,833,769.09/x - Step 3: Cross multiply
72,873,388.40x = 100,565,268.21 × 39,833,769.09 - Step 4: Simplify right side
72,873,388.40x = 4,005,893,672,351,057.50 - Step 5: Solve for x
x = 4,005,893,672,351,057.50/72,873,388.40 - Step 6: Final answer
x = 54,970,597.09
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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.