Finding the Fourth Proportional to 76,985,177.63, 115,477,915.07 and 18,692,609.90
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Solution
The fourth proportional to 76,985,177.63, 115,477,915.07 and 18,692,609.90 is: 28,038,950.93
Step by Step Solution
- Step 1: Write the proportion equation
76,985,177.63 : 115,477,915.07 = 18,692,609.90 : x - Step 2: Convert to fraction form
76,985,177.63/115,477,915.07 = 18,692,609.90/x - Step 3: Cross multiply
76,985,177.63x = 115,477,915.07 × 18,692,609.90 - Step 4: Simplify right side
76,985,177.63x = 2,158,583,617,938,183.25 - Step 5: Solve for x
x = 2,158,583,617,938,183.25/76,985,177.63 - Step 6: Final answer
x = 28,038,950.93
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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.