Finding the Fourth Proportional to 81,107,389.41, 121,668,563.70 and 26,520,254.88
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Solution
The fourth proportional to 81,107,389.41, 121,668,563.70 and 26,520,254.88 is: 39,782,827.97
Step by Step Solution
- Step 1: Write the proportion equation
81,107,389.41 : 121,668,563.70 = 26,520,254.88 : x - Step 2: Convert to fraction form
81,107,389.41/121,668,563.70 = 26,520,254.88/x - Step 3: Cross multiply
81,107,389.41x = 121,668,563.70 × 26,520,254.88 - Step 4: Simplify right side
81,107,389.41x = 3,226,681,320,207,516 - Step 5: Solve for x
x = 3,226,681,320,207,516/81,107,389.41 - Step 6: Final answer
x = 39,782,827.97
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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.