Finding the Fourth Proportional to 81,542,518,378.19, 112,532,163,054 and 45,413,545,008.42
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Solution
The fourth proportional to 81,542,518,378.19, 112,532,163,054 and 45,413,545,008.42 is: 62,672,634,514.99
Step by Step Solution
- Step 1: Write the proportion equation
81,542,518,378.19 : 112,532,163,054 = 45,413,545,008.42 : x - Step 2: Convert to fraction form
81,542,518,378.19/112,532,163,054 = 45,413,545,008.42/x - Step 3: Cross multiply
81,542,518,378.19x = 112,532,163,054 × 45,413,545,008.42 - Step 4: Simplify right side
81,542,518,378.19x = 5,110,484,451,747,687,301,120 - Step 5: Solve for x
x = 5,110,484,451,747,687,301,120/81,542,518,378.19 - Step 6: Final answer
x = 62,672,634,514.99
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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.