Finding the Fourth Proportional to 76,985,181, 115,477,920.14 and 18,692,613.27
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Solution
The fourth proportional to 76,985,181, 115,477,920.14 and 18,692,613.27 is: 28,038,955.99
Step by Step Solution
- Step 1: Write the proportion equation
76,985,181 : 115,477,920.14 = 18,692,613.27 : x - Step 2: Convert to fraction form
76,985,181/115,477,920.14 = 18,692,613.27/x - Step 3: Cross multiply
76,985,181x = 115,477,920.14 × 18,692,613.27 - Step 4: Simplify right side
76,985,181x = 2,158,584,102,307,501.25 - Step 5: Solve for x
x = 2,158,584,102,307,501.25/76,985,181 - Step 6: Final answer
x = 28,038,955.99
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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.