Finding the Fourth Proportional to 57,129,392.87, 85,682,934.58 and 18,257,417.72
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Solution
The fourth proportional to 57,129,392.87, 85,682,934.58 and 18,257,417.72 is: 27,382,561.75
Step by Step Solution
- Step 1: Write the proportion equation
57,129,392.87 : 85,682,934.58 = 18,257,417.72 : x - Step 2: Convert to fraction form
57,129,392.87/85,682,934.58 = 18,257,417.72/x - Step 3: Cross multiply
57,129,392.87x = 85,682,934.58 × 18,257,417.72 - Step 4: Simplify right side
57,129,392.87x = 1,564,349,128,035,336.25 - Step 5: Solve for x
x = 1,564,349,128,035,336.25/57,129,392.87 - Step 6: Final answer
x = 27,382,561.75
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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.