Finding the Fourth Proportional to 45,985,953.15, 68,979,178.80 and 13,638,135.95
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Solution
The fourth proportional to 45,985,953.15, 68,979,178.80 and 13,638,135.95 is: 20,457,277.79
Step by Step Solution
- Step 1: Write the proportion equation
45,985,953.15 : 68,979,178.80 = 13,638,135.95 : x - Step 2: Convert to fraction form
45,985,953.15/68,979,178.80 = 13,638,135.95/x - Step 3: Cross multiply
45,985,953.15x = 68,979,178.80 × 13,638,135.95 - Step 4: Simplify right side
45,985,953.15x = 940,747,418,193,757.75 - Step 5: Solve for x
x = 940,747,418,193,757.75/45,985,953.15 - Step 6: Final answer
x = 20,457,277.79
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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.