Finding the Fourth Proportional to 108,612,512.42, 149,890,391.35 and 61,570,497.63
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Solution
The fourth proportional to 108,612,512.42, 149,890,391.35 and 61,570,497.63 is: 84,970,191.56
Step by Step Solution
- Step 1: Write the proportion equation
108,612,512.42 : 149,890,391.35 = 61,570,497.63 : x - Step 2: Convert to fraction form
108,612,512.42/149,890,391.35 = 61,570,497.63/x - Step 3: Cross multiply
108,612,512.42x = 149,890,391.35 × 61,570,497.63 - Step 4: Simplify right side
108,612,512.42x = 9,228,825,985,374,948 - Step 5: Solve for x
x = 9,228,825,985,374,948/108,612,512.42 - Step 6: Final answer
x = 84,970,191.56
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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.