Finding the Fourth Proportional to 76,683,058.47, 105,831,701.42 and 43,193,639.79
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Solution
The fourth proportional to 76,683,058.47, 105,831,701.42 and 43,193,639.79 is: 59,612,337.86
Step by Step Solution
- Step 1: Write the proportion equation
76,683,058.47 : 105,831,701.42 = 43,193,639.79 : x - Step 2: Convert to fraction form
76,683,058.47/105,831,701.42 = 43,193,639.79/x - Step 3: Cross multiply
76,683,058.47x = 105,831,701.42 × 43,193,639.79 - Step 4: Simplify right side
76,683,058.47x = 4,571,256,389,282,343 - Step 5: Solve for x
x = 4,571,256,389,282,343/76,683,058.47 - Step 6: Final answer
x = 59,612,337.86
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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.