Finding the Fourth Proportional to 81,777,565.87, 122,667,417.29 and 27,190,151.42
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Solution
The fourth proportional to 81,777,565.87, 122,667,417.29 and 27,190,151.42 is: 40,785,582.39
Step by Step Solution
- Step 1: Write the proportion equation
81,777,565.87 : 122,667,417.29 = 27,190,151.42 : x - Step 2: Convert to fraction form
81,777,565.87/122,667,417.29 = 27,190,151.42/x - Step 3: Cross multiply
81,777,565.87x = 122,667,417.29 × 27,190,151.42 - Step 4: Simplify right side
81,777,565.87x = 3,335,345,650,415,426.50 - Step 5: Solve for x
x = 3,335,345,650,415,426.50/81,777,565.87 - Step 6: Final answer
x = 40,785,582.39
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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.