Finding the Fourth Proportional to 76,985,178.63, 115,477,916.57 and 18,692,610.90
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Solution
The fourth proportional to 76,985,178.63, 115,477,916.57 and 18,692,610.90 is: 28,038,952.44
Step by Step Solution
- Step 1: Write the proportion equation
76,985,178.63 : 115,477,916.57 = 18,692,610.90 : x - Step 2: Convert to fraction form
76,985,178.63/115,477,916.57 = 18,692,610.90/x - Step 3: Cross multiply
76,985,178.63x = 115,477,916.57 × 18,692,610.90 - Step 4: Simplify right side
76,985,178.63x = 2,158,583,761,985,672.25 - Step 5: Solve for x
x = 2,158,583,761,985,672.25/76,985,178.63 - Step 6: Final answer
x = 28,038,952.44
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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.