Finding the Fourth Proportional to 101,438,409, 139,985,004.42 and 57,979,278.12
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Solution
The fourth proportional to 101,438,409, 139,985,004.42 and 57,979,278.12 is: 80,011,403.81
Step by Step Solution
- Step 1: Write the proportion equation
101,438,409 : 139,985,004.42 = 57,979,278.12 : x - Step 2: Convert to fraction form
101,438,409/139,985,004.42 = 57,979,278.12/x - Step 3: Cross multiply
101,438,409x = 139,985,004.42 × 57,979,278.12 - Step 4: Simplify right side
101,438,409x = 8,116,229,503,896,608 - Step 5: Solve for x
x = 8,116,229,503,896,608/101,438,409 - Step 6: Final answer
x = 80,011,403.81
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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.