Finding the Fourth Proportional to 72,615,720.44, 100,207,149.90 and 39,575,289.08
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Solution
The fourth proportional to 72,615,720.44, 100,207,149.90 and 39,575,289.08 is: 54,612,512.29
Step by Step Solution
- Step 1: Write the proportion equation
72,615,720.44 : 100,207,149.90 = 39,575,289.08 : x - Step 2: Convert to fraction form
72,615,720.44/100,207,149.90 = 39,575,289.08/x - Step 3: Cross multiply
72,615,720.44x = 100,207,149.90 × 39,575,289.08 - Step 4: Simplify right side
72,615,720.44x = 3,965,726,925,175,393 - Step 5: Solve for x
x = 3,965,726,925,175,393/72,615,720.44 - Step 6: Final answer
x = 54,612,512.29
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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.