Finding the Fourth Proportional to 87,855,679.88, 121,240,628.34 and 48,163,139.72
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Solution
The fourth proportional to 87,855,679.88, 121,240,628.34 and 48,163,139.72 is: 66,465,017.75
Step by Step Solution
- Step 1: Write the proportion equation
87,855,679.88 : 121,240,628.34 = 48,163,139.72 : x - Step 2: Convert to fraction form
87,855,679.88/121,240,628.34 = 48,163,139.72/x - Step 3: Cross multiply
87,855,679.88x = 121,240,628.34 × 48,163,139.72 - Step 4: Simplify right side
87,855,679.88x = 5,839,329,322,480,012 - Step 5: Solve for x
x = 5,839,329,322,480,012/87,855,679.88 - Step 6: Final answer
x = 66,465,017.75
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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.